21017220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{307}}^1$

素因数の和:489

約数の個数: 96

約数和(自身を含む): 67888128

約数和(自身を除く): 46870908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 163, 210, 307, 326, 420, 489, 614, 652, 815, 921, 978, 1141, 1228, 1535, 1630, 1842, 1956, 2149, 2282, 2445, 3070, 3260, 3423, 3684, 4298, 4564, 4605, 4890, 5705, 6140, 6447, 6846, 8596, 9210, 9780, 10745, 11410, 12894, 13692, 17115, 18420, 21490, 22820, 25788, 32235, 34230, 42980, 50041, 64470, 68460, 100082, 128940, 150123, 200164, 250205, 300246, 350287, 500410, 600492, 700574, 750615, 1000820, 1050861, 1401148, 1501230, 1751435, 2101722, 3002460, 3502870, 4203444, 5254305, 7005740, 10508610, 21017220]

約数ペア:

[(1, 21017220), (2, 10508610), (3, 7005740), (4, 5254305), (5, 4203444), (6, 3502870), (7, 3002460), (10, 2101722), (12, 1751435), (14, 1501230), (15, 1401148), (20, 1050861), (21, 1000820), (28, 750615), (30, 700574), (35, 600492), (42, 500410), (60, 350287), (70, 300246), (84, 250205), (105, 200164), (140, 150123), (163, 128940), (210, 100082), (307, 68460), (326, 64470), (420, 50041), (489, 42980), (614, 34230), (652, 32235), (815, 25788), (921, 22820), (978, 21490), (1141, 18420), (1228, 17115), (1535, 13692), (1630, 12894), (1842, 11410), (1956, 10745), (2149, 9780), (2282, 9210), (2445, 8596), (3070, 6846), (3260, 6447), (3423, 6140), (3684, 5705), (4298, 4890), (4564, 4605)]