256297860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15647}}^1$

素因数の和:15682

約数の個数: 144

約数和(自身を含む): 956906496

約数和(自身を除く): 700608636

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 15647, 16380, 31294, 46941, 62588, 78235, 93882, 109529, 140823, 156470, 187764, 203411, 219058, 234705, 281646, 312940, 328587, 406822, 438116, 469410, 547645, 563292, 610233, 657174, 704115, 813644, 938820, 985761, 1017055, 1095290, 1220466, 1314348, 1408230, 1423877, 1642935, 1830699, 1971522, 2034110, 2190580, 2440932, 2816460, 2847754, 3051165, 3285870, 3661398, 3943044, 4068220, 4271631, 4928805, 5695508, 6102330, 6571740, 7119385, 7322796, 8543262, 9153495, 9857610, 12204660, 12814893, 14238770, 17086524, 18306990, 19715220, 21358155, 25629786, 28477540, 36613980, 42716310, 51259572, 64074465, 85432620, 128148930, 256297860]

約数ペア:

[(1, 256297860), (2, 128148930), (3, 85432620), (4, 64074465), (5, 51259572), (6, 42716310), (7, 36613980), (9, 28477540), (10, 25629786), (12, 21358155), (13, 19715220), (14, 18306990), (15, 17086524), (18, 14238770), (20, 12814893), (21, 12204660), (26, 9857610), (28, 9153495), (30, 8543262), (35, 7322796), (36, 7119385), (39, 6571740), (42, 6102330), (45, 5695508), (52, 4928805), (60, 4271631), (63, 4068220), (65, 3943044), (70, 3661398), (78, 3285870), (84, 3051165), (90, 2847754), (91, 2816460), (105, 2440932), (117, 2190580), (126, 2034110), (130, 1971522), (140, 1830699), (156, 1642935), (180, 1423877), (182, 1408230), (195, 1314348), (210, 1220466), (234, 1095290), (252, 1017055), (260, 985761), (273, 938820), (315, 813644), (364, 704115), (390, 657174), (420, 610233), (455, 563292), (468, 547645), (546, 469410), (585, 438116), (630, 406822), (780, 328587), (819, 312940), (910, 281646), (1092, 234705), (1170, 219058), (1260, 203411), (1365, 187764), (1638, 156470), (1820, 140823), (2340, 109529), (2730, 93882), (3276, 78235), (4095, 62588), (5460, 46941), (8190, 31294), (15647, 16380)]