721093040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{1607}}^1$

素因数の和:1770

約数の個数: 80

約数和(自身を含む): 1722746880

約数和(自身を除く): 1001653840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 79, 80, 142, 158, 284, 316, 355, 395, 568, 632, 710, 790, 1136, 1264, 1420, 1580, 1607, 2840, 3160, 3214, 5609, 5680, 6320, 6428, 8035, 11218, 12856, 16070, 22436, 25712, 28045, 32140, 44872, 56090, 64280, 89744, 112180, 114097, 126953, 128560, 224360, 228194, 253906, 448720, 456388, 507812, 570485, 634765, 912776, 1015624, 1140970, 1269530, 1825552, 2031248, 2281940, 2539060, 4563880, 5078120, 9013663, 9127760, 10156240, 18027326, 36054652, 45068315, 72109304, 90136630, 144218608, 180273260, 360546520, 721093040]

約数ペア:

[(1, 721093040), (2, 360546520), (4, 180273260), (5, 144218608), (8, 90136630), (10, 72109304), (16, 45068315), (20, 36054652), (40, 18027326), (71, 10156240), (79, 9127760), (80, 9013663), (142, 5078120), (158, 4563880), (284, 2539060), (316, 2281940), (355, 2031248), (395, 1825552), (568, 1269530), (632, 1140970), (710, 1015624), (790, 912776), (1136, 634765), (1264, 570485), (1420, 507812), (1580, 456388), (1607, 448720), (2840, 253906), (3160, 228194), (3214, 224360), (5609, 128560), (5680, 126953), (6320, 114097), (6428, 112180), (8035, 89744), (11218, 64280), (12856, 56090), (16070, 44872), (22436, 32140), (25712, 28045)]