20514560

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:110

約数の個数: 144

約数和(自身を含む): 56512512

約数和(自身を除く): 35997952

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 47, 55, 62, 64, 80, 88, 94, 110, 124, 128, 155, 160, 176, 188, 220, 235, 248, 256, 310, 320, 341, 352, 376, 440, 470, 496, 517, 620, 640, 682, 704, 752, 880, 940, 992, 1034, 1240, 1280, 1364, 1408, 1457, 1504, 1705, 1760, 1880, 1984, 2068, 2480, 2585, 2728, 2816, 2914, 3008, 3410, 3520, 3760, 3968, 4136, 4960, 5170, 5456, 5828, 6016, 6820, 7040, 7285, 7520, 7936, 8272, 9920, 10340, 10912, 11656, 12032, 13640, 14080, 14570, 15040, 16027, 16544, 19840, 20680, 21824, 23312, 27280, 29140, 30080, 32054, 33088, 39680, 41360, 43648, 46624, 54560, 58280, 60160, 64108, 66176, 80135, 82720, 87296, 93248, 109120, 116560, 128216, 132352, 160270, 165440, 186496, 218240, 233120, 256432, 320540, 330880, 372992, 436480, 466240, 512864, 641080, 661760, 932480, 1025728, 1282160, 1864960, 2051456, 2564320, 4102912, 5128640, 10257280, 20514560]

約数ペア:

[(1, 20514560), (2, 10257280), (4, 5128640), (5, 4102912), (8, 2564320), (10, 2051456), (11, 1864960), (16, 1282160), (20, 1025728), (22, 932480), (31, 661760), (32, 641080), (40, 512864), (44, 466240), (47, 436480), (55, 372992), (62, 330880), (64, 320540), (80, 256432), (88, 233120), (94, 218240), (110, 186496), (124, 165440), (128, 160270), (155, 132352), (160, 128216), (176, 116560), (188, 109120), (220, 93248), (235, 87296), (248, 82720), (256, 80135), (310, 66176), (320, 64108), (341, 60160), (352, 58280), (376, 54560), (440, 46624), (470, 43648), (496, 41360), (517, 39680), (620, 33088), (640, 32054), (682, 30080), (704, 29140), (752, 27280), (880, 23312), (940, 21824), (992, 20680), (1034, 19840), (1240, 16544), (1280, 16027), (1364, 15040), (1408, 14570), (1457, 14080), (1504, 13640), (1705, 12032), (1760, 11656), (1880, 10912), (1984, 10340), (2068, 9920), (2480, 8272), (2585, 7936), (2728, 7520), (2816, 7285), (2914, 7040), (3008, 6820), (3410, 6016), (3520, 5828), (3760, 5456), (3968, 5170), (4136, 4960)]