81970140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^4\times {\mathrm{569}}^1$

素因数の和:609

約数の個数: 120

約数和(自身を含む): 268223760

約数和(自身を除く): 186253620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 343, 420, 490, 569, 588, 686, 735, 980, 1029, 1138, 1372, 1470, 1707, 1715, 2058, 2276, 2401, 2845, 2940, 3414, 3430, 3983, 4116, 4802, 5145, 5690, 6828, 6860, 7203, 7966, 8535, 9604, 10290, 11380, 11949, 12005, 14406, 15932, 17070, 19915, 20580, 23898, 24010, 27881, 28812, 34140, 36015, 39830, 47796, 48020, 55762, 59745, 72030, 79660, 83643, 111524, 119490, 139405, 144060, 167286, 195167, 238980, 278810, 334572, 390334, 418215, 557620, 585501, 780668, 836430, 975835, 1171002, 1366169, 1672860, 1951670, 2342004, 2732338, 2927505, 3903340, 4098507, 5464676, 5855010, 6830845, 8197014, 11710020, 13661690, 16394028, 20492535, 27323380, 40985070, 81970140]

約数ペア:

[(1, 81970140), (2, 40985070), (3, 27323380), (4, 20492535), (5, 16394028), (6, 13661690), (7, 11710020), (10, 8197014), (12, 6830845), (14, 5855010), (15, 5464676), (20, 4098507), (21, 3903340), (28, 2927505), (30, 2732338), (35, 2342004), (42, 1951670), (49, 1672860), (60, 1366169), (70, 1171002), (84, 975835), (98, 836430), (105, 780668), (140, 585501), (147, 557620), (196, 418215), (210, 390334), (245, 334572), (294, 278810), (343, 238980), (420, 195167), (490, 167286), (569, 144060), (588, 139405), (686, 119490), (735, 111524), (980, 83643), (1029, 79660), (1138, 72030), (1372, 59745), (1470, 55762), (1707, 48020), (1715, 47796), (2058, 39830), (2276, 36015), (2401, 34140), (2845, 28812), (2940, 27881), (3414, 24010), (3430, 23898), (3983, 20580), (4116, 19915), (4802, 17070), (5145, 15932), (5690, 14406), (6828, 12005), (6860, 11949), (7203, 11380), (7966, 10290), (8535, 9604)]