20707960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5689}}^1$

素因数の和:5720

約数の個数: 64

約数和(自身を含む): 57355200

約数和(自身を除く): 36647240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5689, 11378, 22756, 28445, 39823, 45512, 56890, 73957, 79646, 113780, 147914, 159292, 199115, 227560, 295828, 318584, 369785, 398230, 517699, 591656, 739570, 796460, 1035398, 1479140, 1592920, 2070796, 2588495, 2958280, 4141592, 5176990, 10353980, 20707960]

約数ペア:

[(1, 20707960), (2, 10353980), (4, 5176990), (5, 4141592), (7, 2958280), (8, 2588495), (10, 2070796), (13, 1592920), (14, 1479140), (20, 1035398), (26, 796460), (28, 739570), (35, 591656), (40, 517699), (52, 398230), (56, 369785), (65, 318584), (70, 295828), (91, 227560), (104, 199115), (130, 159292), (140, 147914), (182, 113780), (260, 79646), (280, 73957), (364, 56890), (455, 45512), (520, 39823), (728, 28445), (910, 22756), (1820, 11378), (3640, 5689)]