19912606480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1007723}}^1$

素因数の和:1007768

約数の個数: 80

約数和(自身を含む): 52482265920

約数和(自身を除く): 32569659440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 19760, 1007723, 2015446, 4030892, 5038615, 8061784, 10077230, 13100399, 16123568, 19146737, 20154460, 26200798, 38293474, 40308920, 52401596, 65501995, 76586948, 80617840, 95733685, 104803192, 131003990, 153173896, 191467370, 209606384, 248907581, 262007980, 306347792, 382934740, 497815162, 524015960, 765869480, 995630324, 1048031920, 1244537905, 1531738960, 1991260648, 2489075810, 3982521296, 4978151620, 9956303240, 19912606480]

約数ペア:

[(1, 19912606480), (2, 9956303240), (4, 4978151620), (5, 3982521296), (8, 2489075810), (10, 1991260648), (13, 1531738960), (16, 1244537905), (19, 1048031920), (20, 995630324), (26, 765869480), (38, 524015960), (40, 497815162), (52, 382934740), (65, 306347792), (76, 262007980), (80, 248907581), (95, 209606384), (104, 191467370), (130, 153173896), (152, 131003990), (190, 104803192), (208, 95733685), (247, 80617840), (260, 76586948), (304, 65501995), (380, 52401596), (494, 40308920), (520, 38293474), (760, 26200798), (988, 20154460), (1040, 19146737), (1235, 16123568), (1520, 13100399), (1976, 10077230), (2470, 8061784), (3952, 5038615), (4940, 4030892), (9880, 2015446), (19760, 1007723)]