81430440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7457}}^1$

素因数の和:7491

約数の個数: 128

約数和(自身を含む): 300706560

約数和(自身を除く): 219276120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 7457, 10920, 14914, 22371, 29828, 37285, 44742, 52199, 59656, 74570, 89484, 96941, 104398, 111855, 149140, 156597, 178968, 193882, 208796, 223710, 260995, 290823, 298280, 313194, 387764, 417592, 447420, 484705, 521990, 581646, 626388, 678587, 775528, 782985, 894840, 969410, 1043980, 1163292, 1252776, 1357174, 1454115, 1565970, 1938820, 2035761, 2087960, 2326584, 2714348, 2908230, 3131940, 3392935, 3877640, 4071522, 5428696, 5816460, 6263880, 6785870, 8143044, 10178805, 11632920, 13571740, 16286088, 20357610, 27143480, 40715220, 81430440]

約数ペア:

[(1, 81430440), (2, 40715220), (3, 27143480), (4, 20357610), (5, 16286088), (6, 13571740), (7, 11632920), (8, 10178805), (10, 8143044), (12, 6785870), (13, 6263880), (14, 5816460), (15, 5428696), (20, 4071522), (21, 3877640), (24, 3392935), (26, 3131940), (28, 2908230), (30, 2714348), (35, 2326584), (39, 2087960), (40, 2035761), (42, 1938820), (52, 1565970), (56, 1454115), (60, 1357174), (65, 1252776), (70, 1163292), (78, 1043980), (84, 969410), (91, 894840), (104, 782985), (105, 775528), (120, 678587), (130, 626388), (140, 581646), (156, 521990), (168, 484705), (182, 447420), (195, 417592), (210, 387764), (260, 313194), (273, 298280), (280, 290823), (312, 260995), (364, 223710), (390, 208796), (420, 193882), (455, 178968), (520, 156597), (546, 149140), (728, 111855), (780, 104398), (840, 96941), (910, 89484), (1092, 74570), (1365, 59656), (1560, 52199), (1820, 44742), (2184, 37285), (2730, 29828), (3640, 22371), (5460, 14914), (7457, 10920)]