18695920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1$

素因数の和:322

約数の個数: 80

約数和(自身を含む): 47005920

約数和(自身を除く): 28310000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 59, 68, 80, 85, 118, 136, 170, 233, 236, 272, 295, 340, 466, 472, 590, 680, 932, 944, 1003, 1165, 1180, 1360, 1864, 2006, 2330, 2360, 3728, 3961, 4012, 4660, 4720, 5015, 7922, 8024, 9320, 10030, 13747, 15844, 16048, 18640, 19805, 20060, 27494, 31688, 39610, 40120, 54988, 63376, 68735, 79220, 80240, 109976, 137470, 158440, 219952, 233699, 274940, 316880, 467398, 549880, 934796, 1099760, 1168495, 1869592, 2336990, 3739184, 4673980, 9347960, 18695920]

約数ペア:

[(1, 18695920), (2, 9347960), (4, 4673980), (5, 3739184), (8, 2336990), (10, 1869592), (16, 1168495), (17, 1099760), (20, 934796), (34, 549880), (40, 467398), (59, 316880), (68, 274940), (80, 233699), (85, 219952), (118, 158440), (136, 137470), (170, 109976), (233, 80240), (236, 79220), (272, 68735), (295, 63376), (340, 54988), (466, 40120), (472, 39610), (590, 31688), (680, 27494), (932, 20060), (944, 19805), (1003, 18640), (1165, 16048), (1180, 15844), (1360, 13747), (1864, 10030), (2006, 9320), (2330, 8024), (2360, 7922), (3728, 5015), (3961, 4720), (4012, 4660)]