20590440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:291

約数の個数: 128

約数和(自身を含む): 67858560

約数和(自身を除く): 47268120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 67, 78, 104, 120, 130, 134, 156, 195, 197, 201, 260, 268, 312, 335, 390, 394, 402, 520, 536, 591, 670, 780, 788, 804, 871, 985, 1005, 1182, 1340, 1560, 1576, 1608, 1742, 1970, 2010, 2364, 2561, 2613, 2680, 2955, 3484, 3940, 4020, 4355, 4728, 5122, 5226, 5910, 6968, 7683, 7880, 8040, 8710, 10244, 10452, 11820, 12805, 13065, 13199, 15366, 17420, 20488, 20904, 23640, 25610, 26130, 26398, 30732, 34840, 38415, 39597, 51220, 52260, 52796, 61464, 65995, 76830, 79194, 102440, 104520, 105592, 131990, 153660, 158388, 171587, 197985, 263980, 307320, 316776, 343174, 395970, 514761, 527960, 686348, 791940, 857935, 1029522, 1372696, 1583880, 1715870, 2059044, 2573805, 3431740, 4118088, 5147610, 6863480, 10295220, 20590440]

約数ペア:

[(1, 20590440), (2, 10295220), (3, 6863480), (4, 5147610), (5, 4118088), (6, 3431740), (8, 2573805), (10, 2059044), (12, 1715870), (13, 1583880), (15, 1372696), (20, 1029522), (24, 857935), (26, 791940), (30, 686348), (39, 527960), (40, 514761), (52, 395970), (60, 343174), (65, 316776), (67, 307320), (78, 263980), (104, 197985), (120, 171587), (130, 158388), (134, 153660), (156, 131990), (195, 105592), (197, 104520), (201, 102440), (260, 79194), (268, 76830), (312, 65995), (335, 61464), (390, 52796), (394, 52260), (402, 51220), (520, 39597), (536, 38415), (591, 34840), (670, 30732), (780, 26398), (788, 26130), (804, 25610), (871, 23640), (985, 20904), (1005, 20488), (1182, 17420), (1340, 15366), (1560, 13199), (1576, 13065), (1608, 12805), (1742, 11820), (1970, 10452), (2010, 10244), (2364, 8710), (2561, 8040), (2613, 7880), (2680, 7683), (2955, 6968), (3484, 5910), (3940, 5226), (4020, 5122), (4355, 4728)]