21353800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 54996480

約数和(自身を除く): 33642680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 43, 50, 52, 65, 86, 100, 104, 130, 172, 191, 200, 215, 260, 325, 344, 382, 430, 520, 559, 650, 764, 860, 955, 1075, 1118, 1300, 1528, 1720, 1910, 2150, 2236, 2483, 2600, 2795, 3820, 4300, 4472, 4775, 4966, 5590, 7640, 8213, 8600, 9550, 9932, 11180, 12415, 13975, 16426, 19100, 19864, 22360, 24830, 27950, 32852, 38200, 41065, 49660, 55900, 62075, 65704, 82130, 99320, 106769, 111800, 124150, 164260, 205325, 213538, 248300, 328520, 410650, 427076, 496600, 533845, 821300, 854152, 1067690, 1642600, 2135380, 2669225, 4270760, 5338450, 10676900, 21353800]

約数ペア:

[(1, 21353800), (2, 10676900), (4, 5338450), (5, 4270760), (8, 2669225), (10, 2135380), (13, 1642600), (20, 1067690), (25, 854152), (26, 821300), (40, 533845), (43, 496600), (50, 427076), (52, 410650), (65, 328520), (86, 248300), (100, 213538), (104, 205325), (130, 164260), (172, 124150), (191, 111800), (200, 106769), (215, 99320), (260, 82130), (325, 65704), (344, 62075), (382, 55900), (430, 49660), (520, 41065), (559, 38200), (650, 32852), (764, 27950), (860, 24830), (955, 22360), (1075, 19864), (1118, 19100), (1300, 16426), (1528, 13975), (1720, 12415), (1910, 11180), (2150, 9932), (2236, 9550), (2483, 8600), (2600, 8213), (2795, 7640), (3820, 5590), (4300, 4966), (4472, 4775)]