257999820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19457}}^1$

素因数の和:19499

約数の個数: 96

約数和(自身を含む): 823773888

約数和(自身を除く): 565774068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 2210, 2652, 3315, 4420, 6630, 13260, 19457, 38914, 58371, 77828, 97285, 116742, 194570, 233484, 252941, 291855, 330769, 389140, 505882, 583710, 661538, 758823, 992307, 1011764, 1167420, 1264705, 1323076, 1517646, 1653845, 1984614, 2529410, 3035292, 3307690, 3794115, 3969228, 4299997, 4961535, 5058820, 6615380, 7588230, 8599994, 9923070, 12899991, 15176460, 17199988, 19846140, 21499985, 25799982, 42999970, 51599964, 64499955, 85999940, 128999910, 257999820]

約数ペア:

[(1, 257999820), (2, 128999910), (3, 85999940), (4, 64499955), (5, 51599964), (6, 42999970), (10, 25799982), (12, 21499985), (13, 19846140), (15, 17199988), (17, 15176460), (20, 12899991), (26, 9923070), (30, 8599994), (34, 7588230), (39, 6615380), (51, 5058820), (52, 4961535), (60, 4299997), (65, 3969228), (68, 3794115), (78, 3307690), (85, 3035292), (102, 2529410), (130, 1984614), (156, 1653845), (170, 1517646), (195, 1323076), (204, 1264705), (221, 1167420), (255, 1011764), (260, 992307), (340, 758823), (390, 661538), (442, 583710), (510, 505882), (663, 389140), (780, 330769), (884, 291855), (1020, 252941), (1105, 233484), (1326, 194570), (2210, 116742), (2652, 97285), (3315, 77828), (4420, 58371), (6630, 38914), (13260, 19457)]