15980965420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1259}}^1\times {\mathrm{1277}}^1$

素因数の和:2623

約数の個数: 96

約数和(自身を含む): 38955893760

約数和(自身を除く): 22974928340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1259, 1277, 1420, 1988, 2485, 2518, 2554, 4970, 5036, 5108, 6295, 6385, 8813, 8939, 9940, 12590, 12770, 17626, 17878, 25180, 25540, 35252, 35756, 44065, 44695, 88130, 89389, 89390, 90667, 176260, 178778, 178780, 181334, 357556, 362668, 446945, 453335, 625723, 634669, 893890, 906670, 1251446, 1269338, 1607743, 1787780, 1813340, 2502892, 2538676, 3128615, 3173345, 3215486, 6257230, 6346690, 6430972, 8038715, 11254201, 12514460, 12693380, 16077430, 22508402, 32154860, 45016804, 56271005, 112542010, 114149753, 225084020, 228299506, 456599012, 570748765, 799048271, 1141497530, 1598096542, 2282995060, 3196193084, 3995241355, 7990482710, 15980965420]

約数ペア:

[(1, 15980965420), (2, 7990482710), (4, 3995241355), (5, 3196193084), (7, 2282995060), (10, 1598096542), (14, 1141497530), (20, 799048271), (28, 570748765), (35, 456599012), (70, 228299506), (71, 225084020), (140, 114149753), (142, 112542010), (284, 56271005), (355, 45016804), (497, 32154860), (710, 22508402), (994, 16077430), (1259, 12693380), (1277, 12514460), (1420, 11254201), (1988, 8038715), (2485, 6430972), (2518, 6346690), (2554, 6257230), (4970, 3215486), (5036, 3173345), (5108, 3128615), (6295, 2538676), (6385, 2502892), (8813, 1813340), (8939, 1787780), (9940, 1607743), (12590, 1269338), (12770, 1251446), (17626, 906670), (17878, 893890), (25180, 634669), (25540, 625723), (35252, 453335), (35756, 446945), (44065, 362668), (44695, 357556), (88130, 181334), (89389, 178780), (89390, 178778), (90667, 176260)]