42157960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:311

約数の個数: 128

約数和(自身を含む): 114307200

約数和(自身を除く): 72149240

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 19, 20, 26, 34, 38, 40, 52, 65, 68, 76, 85, 95, 104, 130, 136, 152, 170, 190, 221, 247, 251, 260, 323, 340, 380, 442, 494, 502, 520, 646, 680, 760, 884, 988, 1004, 1105, 1235, 1255, 1292, 1615, 1768, 1976, 2008, 2210, 2470, 2510, 2584, 3230, 3263, 4199, 4267, 4420, 4769, 4940, 5020, 6460, 6526, 8398, 8534, 8840, 9538, 9880, 10040, 12920, 13052, 16315, 16796, 17068, 19076, 20995, 21335, 23845, 26104, 32630, 33592, 34136, 38152, 41990, 42670, 47690, 55471, 61997, 65260, 81073, 83980, 85340, 95380, 110942, 123994, 130520, 162146, 167960, 170680, 190760, 221884, 247988, 277355, 309985, 324292, 405365, 443768, 495976, 554710, 619970, 648584, 810730, 1053949, 1109420, 1239940, 1621460, 2107898, 2218840, 2479880, 3242920, 4215796, 5269745, 8431592, 10539490, 21078980, 42157960]

約数ペア:

[(1, 42157960), (2, 21078980), (4, 10539490), (5, 8431592), (8, 5269745), (10, 4215796), (13, 3242920), (17, 2479880), (19, 2218840), (20, 2107898), (26, 1621460), (34, 1239940), (38, 1109420), (40, 1053949), (52, 810730), (65, 648584), (68, 619970), (76, 554710), (85, 495976), (95, 443768), (104, 405365), (130, 324292), (136, 309985), (152, 277355), (170, 247988), (190, 221884), (221, 190760), (247, 170680), (251, 167960), (260, 162146), (323, 130520), (340, 123994), (380, 110942), (442, 95380), (494, 85340), (502, 83980), (520, 81073), (646, 65260), (680, 61997), (760, 55471), (884, 47690), (988, 42670), (1004, 41990), (1105, 38152), (1235, 34136), (1255, 33592), (1292, 32630), (1615, 26104), (1768, 23845), (1976, 21335), (2008, 20995), (2210, 19076), (2470, 17068), (2510, 16796), (2584, 16315), (3230, 13052), (3263, 12920), (4199, 10040), (4267, 9880), (4420, 9538), (4769, 8840), (4940, 8534), (5020, 8398), (6460, 6526)]