81317460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1627}}^1$

素因数の和:1670

約数の個数: 144

約数和(自身を含む): 280615104

約数和(自身を除く): 199297644

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 49, 51, 60, 68, 70, 84, 85, 98, 102, 105, 119, 140, 147, 170, 196, 204, 210, 238, 245, 255, 294, 340, 357, 420, 476, 490, 510, 588, 595, 714, 735, 833, 980, 1020, 1190, 1428, 1470, 1627, 1666, 1785, 2380, 2499, 2940, 3254, 3332, 3570, 4165, 4881, 4998, 6508, 7140, 8135, 8330, 9762, 9996, 11389, 12495, 16270, 16660, 19524, 22778, 24405, 24990, 27659, 32540, 34167, 45556, 48810, 49980, 55318, 56945, 68334, 79723, 82977, 97620, 110636, 113890, 136668, 138295, 159446, 165954, 170835, 193613, 227780, 239169, 276590, 318892, 331908, 341670, 387226, 398615, 414885, 478338, 553180, 580839, 683340, 774452, 797230, 829770, 956676, 968065, 1161678, 1195845, 1355291, 1594460, 1659540, 1936130, 2323356, 2391690, 2710582, 2904195, 3872260, 4065873, 4783380, 5421164, 5808390, 6776455, 8131746, 11616780, 13552910, 16263492, 20329365, 27105820, 40658730, 81317460]

約数ペア:

[(1, 81317460), (2, 40658730), (3, 27105820), (4, 20329365), (5, 16263492), (6, 13552910), (7, 11616780), (10, 8131746), (12, 6776455), (14, 5808390), (15, 5421164), (17, 4783380), (20, 4065873), (21, 3872260), (28, 2904195), (30, 2710582), (34, 2391690), (35, 2323356), (42, 1936130), (49, 1659540), (51, 1594460), (60, 1355291), (68, 1195845), (70, 1161678), (84, 968065), (85, 956676), (98, 829770), (102, 797230), (105, 774452), (119, 683340), (140, 580839), (147, 553180), (170, 478338), (196, 414885), (204, 398615), (210, 387226), (238, 341670), (245, 331908), (255, 318892), (294, 276590), (340, 239169), (357, 227780), (420, 193613), (476, 170835), (490, 165954), (510, 159446), (588, 138295), (595, 136668), (714, 113890), (735, 110636), (833, 97620), (980, 82977), (1020, 79723), (1190, 68334), (1428, 56945), (1470, 55318), (1627, 49980), (1666, 48810), (1785, 45556), (2380, 34167), (2499, 32540), (2940, 27659), (3254, 24990), (3332, 24405), (3570, 22778), (4165, 19524), (4881, 16660), (4998, 16270), (6508, 12495), (7140, 11389), (8135, 9996), (8330, 9762)]