19819280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:121

約数の個数: 160

約数和(自身を含む): 56246400

約数和(自身を除く): 36427120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 19, 20, 26, 34, 38, 40, 52, 59, 65, 68, 76, 80, 85, 95, 104, 118, 130, 136, 152, 170, 190, 208, 221, 236, 247, 260, 272, 295, 304, 323, 340, 380, 442, 472, 494, 520, 590, 646, 680, 760, 767, 884, 944, 988, 1003, 1040, 1105, 1121, 1180, 1235, 1292, 1360, 1520, 1534, 1615, 1768, 1976, 2006, 2210, 2242, 2360, 2470, 2584, 3068, 3230, 3536, 3835, 3952, 4012, 4199, 4420, 4484, 4720, 4940, 5015, 5168, 5605, 6136, 6460, 7670, 8024, 8398, 8840, 8968, 9880, 10030, 11210, 12272, 12920, 13039, 14573, 15340, 16048, 16796, 17680, 17936, 19057, 19760, 20060, 20995, 22420, 25840, 26078, 29146, 30680, 33592, 38114, 40120, 41990, 44840, 52156, 58292, 61360, 65195, 67184, 72865, 76228, 80240, 83980, 89680, 95285, 104312, 116584, 130390, 145730, 152456, 167960, 190570, 208624, 233168, 247741, 260780, 291460, 304912, 335920, 381140, 495482, 521560, 582920, 762280, 990964, 1043120, 1165840, 1238705, 1524560, 1981928, 2477410, 3963856, 4954820, 9909640, 19819280]

約数ペア:

[(1, 19819280), (2, 9909640), (4, 4954820), (5, 3963856), (8, 2477410), (10, 1981928), (13, 1524560), (16, 1238705), (17, 1165840), (19, 1043120), (20, 990964), (26, 762280), (34, 582920), (38, 521560), (40, 495482), (52, 381140), (59, 335920), (65, 304912), (68, 291460), (76, 260780), (80, 247741), (85, 233168), (95, 208624), (104, 190570), (118, 167960), (130, 152456), (136, 145730), (152, 130390), (170, 116584), (190, 104312), (208, 95285), (221, 89680), (236, 83980), (247, 80240), (260, 76228), (272, 72865), (295, 67184), (304, 65195), (323, 61360), (340, 58292), (380, 52156), (442, 44840), (472, 41990), (494, 40120), (520, 38114), (590, 33592), (646, 30680), (680, 29146), (760, 26078), (767, 25840), (884, 22420), (944, 20995), (988, 20060), (1003, 19760), (1040, 19057), (1105, 17936), (1121, 17680), (1180, 16796), (1235, 16048), (1292, 15340), (1360, 14573), (1520, 13039), (1534, 12920), (1615, 12272), (1768, 11210), (1976, 10030), (2006, 9880), (2210, 8968), (2242, 8840), (2360, 8398), (2470, 8024), (2584, 7670), (3068, 6460), (3230, 6136), (3536, 5605), (3835, 5168), (3952, 5015), (4012, 4940), (4199, 4720), (4420, 4484)]