64959320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 150465600

約数和(自身を除く): 85506280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 89, 142, 178, 257, 284, 355, 356, 445, 514, 568, 710, 712, 890, 1028, 1285, 1420, 1780, 2056, 2570, 2840, 3560, 5140, 6319, 10280, 12638, 18247, 22873, 25276, 31595, 36494, 45746, 50552, 63190, 72988, 91235, 91492, 114365, 126380, 145976, 182470, 182984, 228730, 252760, 364940, 457460, 729880, 914920, 1623983, 3247966, 6495932, 8119915, 12991864, 16239830, 32479660, 64959320]

約数ペア:

[(1, 64959320), (2, 32479660), (4, 16239830), (5, 12991864), (8, 8119915), (10, 6495932), (20, 3247966), (40, 1623983), (71, 914920), (89, 729880), (142, 457460), (178, 364940), (257, 252760), (284, 228730), (355, 182984), (356, 182470), (445, 145976), (514, 126380), (568, 114365), (710, 91492), (712, 91235), (890, 72988), (1028, 63190), (1285, 50552), (1420, 45746), (1780, 36494), (2056, 31595), (2570, 25276), (2840, 22873), (3560, 18247), (5140, 12638), (6319, 10280)]