20818812

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:331

約数の個数: 96

約数和(自身を含む): 59996160

約数和(自身を除く): 39177348

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 61, 68, 84, 102, 119, 122, 183, 204, 238, 239, 244, 357, 366, 427, 476, 478, 714, 717, 732, 854, 956, 1037, 1281, 1428, 1434, 1673, 1708, 2074, 2562, 2868, 3111, 3346, 4063, 4148, 5019, 5124, 6222, 6692, 7259, 8126, 10038, 12189, 12444, 14518, 14579, 16252, 20076, 21777, 24378, 28441, 29036, 29158, 43554, 43737, 48756, 56882, 58316, 85323, 87108, 87474, 102053, 113764, 170646, 174948, 204106, 247843, 306159, 341292, 408212, 495686, 612318, 743529, 991372, 1224636, 1487058, 1734901, 2974116, 3469802, 5204703, 6939604, 10409406, 20818812]

約数ペア:

[(1, 20818812), (2, 10409406), (3, 6939604), (4, 5204703), (6, 3469802), (7, 2974116), (12, 1734901), (14, 1487058), (17, 1224636), (21, 991372), (28, 743529), (34, 612318), (42, 495686), (51, 408212), (61, 341292), (68, 306159), (84, 247843), (102, 204106), (119, 174948), (122, 170646), (183, 113764), (204, 102053), (238, 87474), (239, 87108), (244, 85323), (357, 58316), (366, 56882), (427, 48756), (476, 43737), (478, 43554), (714, 29158), (717, 29036), (732, 28441), (854, 24378), (956, 21777), (1037, 20076), (1281, 16252), (1428, 14579), (1434, 14518), (1673, 12444), (1708, 12189), (2074, 10038), (2562, 8126), (2868, 7259), (3111, 6692), (3346, 6222), (4063, 5124), (4148, 5019)]