399981040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{1201}}^1$

素因数の和:1418

約数の個数: 80

約数和(自身を含む): 976562496

約数和(自身を除く): 576581456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 181, 184, 230, 362, 368, 460, 724, 905, 920, 1201, 1448, 1810, 1840, 2402, 2896, 3620, 4163, 4804, 6005, 7240, 8326, 9608, 12010, 14480, 16652, 19216, 20815, 24020, 27623, 33304, 41630, 48040, 55246, 66608, 83260, 96080, 110492, 138115, 166520, 217381, 220984, 276230, 333040, 434762, 441968, 552460, 869524, 1086905, 1104920, 1739048, 2173810, 2209840, 3478096, 4347620, 4999763, 8695240, 9999526, 17390480, 19999052, 24998815, 39998104, 49997630, 79996208, 99995260, 199990520, 399981040]

約数ペア:

[(1, 399981040), (2, 199990520), (4, 99995260), (5, 79996208), (8, 49997630), (10, 39998104), (16, 24998815), (20, 19999052), (23, 17390480), (40, 9999526), (46, 8695240), (80, 4999763), (92, 4347620), (115, 3478096), (181, 2209840), (184, 2173810), (230, 1739048), (362, 1104920), (368, 1086905), (460, 869524), (724, 552460), (905, 441968), (920, 434762), (1201, 333040), (1448, 276230), (1810, 220984), (1840, 217381), (2402, 166520), (2896, 138115), (3620, 110492), (4163, 96080), (4804, 83260), (6005, 66608), (7240, 55246), (8326, 48040), (9608, 41630), (12010, 33304), (14480, 27623), (16652, 24020), (19216, 20815)]