21713250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:181

約数の個数: 128

約数和(自身を含む): 62270208

約数和(自身を除く): 40556958

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 25, 26, 30, 34, 39, 50, 51, 65, 75, 78, 85, 102, 125, 130, 131, 150, 170, 195, 221, 250, 255, 262, 325, 375, 390, 393, 425, 442, 510, 650, 655, 663, 750, 786, 850, 975, 1105, 1275, 1310, 1326, 1625, 1703, 1950, 1965, 2125, 2210, 2227, 2550, 3250, 3275, 3315, 3406, 3930, 4250, 4454, 4875, 5109, 5525, 6375, 6550, 6630, 6681, 8515, 9750, 9825, 10218, 11050, 11135, 12750, 13362, 16375, 16575, 17030, 19650, 22270, 25545, 27625, 28951, 32750, 33150, 33405, 42575, 49125, 51090, 55250, 55675, 57902, 66810, 82875, 85150, 86853, 98250, 111350, 127725, 144755, 165750, 167025, 173706, 212875, 255450, 278375, 289510, 334050, 425750, 434265, 556750, 638625, 723775, 835125, 868530, 1277250, 1447550, 1670250, 2171325, 3618875, 4342650, 7237750, 10856625, 21713250]

約数ペア:

[(1, 21713250), (2, 10856625), (3, 7237750), (5, 4342650), (6, 3618875), (10, 2171325), (13, 1670250), (15, 1447550), (17, 1277250), (25, 868530), (26, 835125), (30, 723775), (34, 638625), (39, 556750), (50, 434265), (51, 425750), (65, 334050), (75, 289510), (78, 278375), (85, 255450), (102, 212875), (125, 173706), (130, 167025), (131, 165750), (150, 144755), (170, 127725), (195, 111350), (221, 98250), (250, 86853), (255, 85150), (262, 82875), (325, 66810), (375, 57902), (390, 55675), (393, 55250), (425, 51090), (442, 49125), (510, 42575), (650, 33405), (655, 33150), (663, 32750), (750, 28951), (786, 27625), (850, 25545), (975, 22270), (1105, 19650), (1275, 17030), (1310, 16575), (1326, 16375), (1625, 13362), (1703, 12750), (1950, 11135), (1965, 11050), (2125, 10218), (2210, 9825), (2227, 9750), (2550, 8515), (3250, 6681), (3275, 6630), (3315, 6550), (3406, 6375), (3930, 5525), (4250, 5109), (4454, 4875)]