661786020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{683}}^1\times {\mathrm{769}}^1$

素因数の和:1474

約数の個数: 144

約数和(自身を含む): 2300538240

約数和(自身を除く): 1638752220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 683, 769, 1260, 1366, 1538, 2049, 2307, 2732, 3076, 3415, 3845, 4098, 4614, 4781, 5383, 6147, 6830, 6921, 7690, 8196, 9228, 9562, 10245, 10766, 11535, 12294, 13660, 13842, 14343, 15380, 16149, 19124, 20490, 21532, 23070, 23905, 24588, 26915, 27684, 28686, 30735, 32298, 34605, 40980, 43029, 46140, 47810, 48447, 53830, 57372, 61470, 64596, 69210, 71715, 80745, 86058, 95620, 96894, 107660, 122940, 138420, 143430, 161490, 172116, 193788, 215145, 242235, 286860, 322980, 430290, 484470, 525227, 860580, 968940, 1050454, 1575681, 2100908, 2626135, 3151362, 3676589, 4727043, 5252270, 6302724, 7353178, 7878405, 9454086, 10504540, 11029767, 14706356, 15756810, 18382945, 18908172, 22059534, 23635215, 31513620, 33089301, 36765890, 44119068, 47270430, 55148835, 66178602, 73531780, 94540860, 110297670, 132357204, 165446505, 220595340, 330893010, 661786020]

約数ペア:

[(1, 661786020), (2, 330893010), (3, 220595340), (4, 165446505), (5, 132357204), (6, 110297670), (7, 94540860), (9, 73531780), (10, 66178602), (12, 55148835), (14, 47270430), (15, 44119068), (18, 36765890), (20, 33089301), (21, 31513620), (28, 23635215), (30, 22059534), (35, 18908172), (36, 18382945), (42, 15756810), (45, 14706356), (60, 11029767), (63, 10504540), (70, 9454086), (84, 7878405), (90, 7353178), (105, 6302724), (126, 5252270), (140, 4727043), (180, 3676589), (210, 3151362), (252, 2626135), (315, 2100908), (420, 1575681), (630, 1050454), (683, 968940), (769, 860580), (1260, 525227), (1366, 484470), (1538, 430290), (2049, 322980), (2307, 286860), (2732, 242235), (3076, 215145), (3415, 193788), (3845, 172116), (4098, 161490), (4614, 143430), (4781, 138420), (5383, 122940), (6147, 107660), (6830, 96894), (6921, 95620), (7690, 86058), (8196, 80745), (9228, 71715), (9562, 69210), (10245, 64596), (10766, 61470), (11535, 57372), (12294, 53830), (13660, 48447), (13842, 47810), (14343, 46140), (15380, 43029), (16149, 40980), (19124, 34605), (20490, 32298), (21532, 30735), (23070, 28686), (23905, 27684), (24588, 26915)]