20349940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:169

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 29437196

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 41, 46, 52, 65, 82, 83, 92, 115, 130, 164, 166, 205, 230, 260, 299, 332, 410, 415, 460, 533, 598, 820, 830, 943, 1066, 1079, 1196, 1495, 1660, 1886, 1909, 2132, 2158, 2665, 2990, 3403, 3772, 3818, 4316, 4715, 5330, 5395, 5980, 6806, 7636, 9430, 9545, 10660, 10790, 12259, 13612, 17015, 18860, 19090, 21580, 24518, 24817, 34030, 38180, 44239, 49036, 49634, 61295, 68060, 78269, 88478, 99268, 122590, 124085, 156538, 176956, 221195, 245180, 248170, 313076, 391345, 442390, 496340, 782690, 884780, 1017497, 1565380, 2034994, 4069988, 5087485, 10174970, 20349940]

約数ペア:

[(1, 20349940), (2, 10174970), (4, 5087485), (5, 4069988), (10, 2034994), (13, 1565380), (20, 1017497), (23, 884780), (26, 782690), (41, 496340), (46, 442390), (52, 391345), (65, 313076), (82, 248170), (83, 245180), (92, 221195), (115, 176956), (130, 156538), (164, 124085), (166, 122590), (205, 99268), (230, 88478), (260, 78269), (299, 68060), (332, 61295), (410, 49634), (415, 49036), (460, 44239), (533, 38180), (598, 34030), (820, 24817), (830, 24518), (943, 21580), (1066, 19090), (1079, 18860), (1196, 17015), (1495, 13612), (1660, 12259), (1886, 10790), (1909, 10660), (2132, 9545), (2158, 9430), (2665, 7636), (2990, 6806), (3403, 5980), (3772, 5395), (3818, 5330), (4316, 4715)]