20921032720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1\times {\mathrm{1471}}^1$

素因数の和:1833

約数の個数: 160

約数和(自身を含む): 56379248640

約数和(自身を除く): 35458215920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 233, 280, 436, 466, 545, 560, 763, 872, 932, 1090, 1165, 1471, 1526, 1631, 1744, 1864, 2180, 2330, 2942, 3052, 3262, 3728, 3815, 4360, 4660, 5884, 6104, 6524, 7355, 7630, 8155, 8720, 9320, 10297, 11768, 12208, 13048, 14710, 15260, 16310, 18640, 20594, 23536, 25397, 26096, 29420, 30520, 32620, 41188, 50794, 51485, 58840, 61040, 65240, 82376, 101588, 102970, 117680, 126985, 130480, 160339, 164752, 177779, 203176, 205940, 253970, 320678, 342743, 355558, 406352, 411880, 507940, 641356, 685486, 711116, 801695, 823760, 888895, 1015880, 1122373, 1282712, 1370972, 1422232, 1603390, 1713715, 1777790, 2031760, 2244746, 2399201, 2565424, 2741944, 2844464, 3206780, 3427430, 3555580, 4489492, 4798402, 5483888, 5611865, 6413560, 6854860, 7111160, 8978984, 9596804, 11223730, 11996005, 12827120, 13709720, 14222320, 17957968, 19193608, 22447460, 23992010, 27419440, 37358987, 38387216, 44894920, 47984020, 74717974, 89789840, 95968040, 149435948, 186794935, 191936080, 261512909, 298871896, 373589870, 523025818, 597743792, 747179740, 1046051636, 1307564545, 1494359480, 2092103272, 2615129090, 2988718960, 4184206544, 5230258180, 10460516360, 20921032720]

約数ペア:

[(1, 20921032720), (2, 10460516360), (4, 5230258180), (5, 4184206544), (7, 2988718960), (8, 2615129090), (10, 2092103272), (14, 1494359480), (16, 1307564545), (20, 1046051636), (28, 747179740), (35, 597743792), (40, 523025818), (56, 373589870), (70, 298871896), (80, 261512909), (109, 191936080), (112, 186794935), (140, 149435948), (218, 95968040), (233, 89789840), (280, 74717974), (436, 47984020), (466, 44894920), (545, 38387216), (560, 37358987), (763, 27419440), (872, 23992010), (932, 22447460), (1090, 19193608), (1165, 17957968), (1471, 14222320), (1526, 13709720), (1631, 12827120), (1744, 11996005), (1864, 11223730), (2180, 9596804), (2330, 8978984), (2942, 7111160), (3052, 6854860), (3262, 6413560), (3728, 5611865), (3815, 5483888), (4360, 4798402), (4660, 4489492), (5884, 3555580), (6104, 3427430), (6524, 3206780), (7355, 2844464), (7630, 2741944), (8155, 2565424), (8720, 2399201), (9320, 2244746), (10297, 2031760), (11768, 1777790), (12208, 1713715), (13048, 1603390), (14710, 1422232), (15260, 1370972), (16310, 1282712), (18640, 1122373), (20594, 1015880), (23536, 888895), (25397, 823760), (26096, 801695), (29420, 711116), (30520, 685486), (32620, 641356), (41188, 507940), (50794, 411880), (51485, 406352), (58840, 355558), (61040, 342743), (65240, 320678), (82376, 253970), (101588, 205940), (102970, 203176), (117680, 177779), (126985, 164752), (130480, 160339)]