20858340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 61246080

約数和(自身を除く): 40387740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 61, 82, 122, 123, 139, 164, 183, 205, 244, 246, 278, 305, 366, 410, 417, 492, 556, 610, 615, 695, 732, 820, 834, 915, 1220, 1230, 1390, 1668, 1830, 2085, 2460, 2501, 2780, 3660, 4170, 5002, 5699, 7503, 8340, 8479, 10004, 11398, 12505, 15006, 16958, 17097, 22796, 25010, 25437, 28495, 30012, 33916, 34194, 37515, 42395, 50020, 50874, 56990, 68388, 75030, 84790, 85485, 101748, 113980, 127185, 150060, 169580, 170970, 254370, 341940, 347639, 508740, 695278, 1042917, 1390556, 1738195, 2085834, 3476390, 4171668, 5214585, 6952780, 10429170, 20858340]

約数ペア:

[(1, 20858340), (2, 10429170), (3, 6952780), (4, 5214585), (5, 4171668), (6, 3476390), (10, 2085834), (12, 1738195), (15, 1390556), (20, 1042917), (30, 695278), (41, 508740), (60, 347639), (61, 341940), (82, 254370), (122, 170970), (123, 169580), (139, 150060), (164, 127185), (183, 113980), (205, 101748), (244, 85485), (246, 84790), (278, 75030), (305, 68388), (366, 56990), (410, 50874), (417, 50020), (492, 42395), (556, 37515), (610, 34194), (615, 33916), (695, 30012), (732, 28495), (820, 25437), (834, 25010), (915, 22796), (1220, 17097), (1230, 16958), (1390, 15006), (1668, 12505), (1830, 11398), (2085, 10004), (2460, 8479), (2501, 8340), (2780, 7503), (3660, 5699), (4170, 5002)]