21781296

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^2\times {\mathrm{419}}^1$

素因数の和:471

約数の個数: 90

約数和(自身を含む): 64488060

約数和(自身を除く): 42706764

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 72, 76, 114, 144, 152, 171, 228, 304, 342, 361, 419, 456, 684, 722, 838, 912, 1083, 1257, 1368, 1444, 1676, 2166, 2514, 2736, 2888, 3249, 3352, 3771, 4332, 5028, 5776, 6498, 6704, 7542, 7961, 8664, 10056, 12996, 15084, 15922, 17328, 20112, 23883, 25992, 30168, 31844, 47766, 51984, 60336, 63688, 71649, 95532, 127376, 143298, 151259, 191064, 286596, 302518, 382128, 453777, 573192, 605036, 907554, 1146384, 1210072, 1361331, 1815108, 2420144, 2722662, 3630216, 5445324, 7260432, 10890648, 21781296]

約数ペア:

[(1, 21781296), (2, 10890648), (3, 7260432), (4, 5445324), (6, 3630216), (8, 2722662), (9, 2420144), (12, 1815108), (16, 1361331), (18, 1210072), (19, 1146384), (24, 907554), (36, 605036), (38, 573192), (48, 453777), (57, 382128), (72, 302518), (76, 286596), (114, 191064), (144, 151259), (152, 143298), (171, 127376), (228, 95532), (304, 71649), (342, 63688), (361, 60336), (419, 51984), (456, 47766), (684, 31844), (722, 30168), (838, 25992), (912, 23883), (1083, 20112), (1257, 17328), (1368, 15922), (1444, 15084), (1676, 12996), (2166, 10056), (2514, 8664), (2736, 7961), (2888, 7542), (3249, 6704), (3352, 6498), (3771, 5776), (4332, 5028)]