28436980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 71745408

約数和(自身を除く): 43308428

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 61, 65, 110, 122, 130, 143, 163, 220, 244, 260, 286, 305, 326, 572, 610, 652, 671, 715, 793, 815, 1220, 1342, 1430, 1586, 1630, 1793, 2119, 2684, 2860, 3172, 3260, 3355, 3586, 3965, 4238, 6710, 7172, 7930, 8476, 8723, 8965, 9943, 10595, 13420, 15860, 17446, 17930, 19886, 21190, 23309, 34892, 35860, 39772, 42380, 43615, 46618, 49715, 87230, 93236, 99430, 109373, 116545, 129259, 174460, 198860, 218746, 233090, 258518, 437492, 466180, 517036, 546865, 646295, 1093730, 1292590, 1421849, 2187460, 2585180, 2843698, 5687396, 7109245, 14218490, 28436980]

約数ペア:

[(1, 28436980), (2, 14218490), (4, 7109245), (5, 5687396), (10, 2843698), (11, 2585180), (13, 2187460), (20, 1421849), (22, 1292590), (26, 1093730), (44, 646295), (52, 546865), (55, 517036), (61, 466180), (65, 437492), (110, 258518), (122, 233090), (130, 218746), (143, 198860), (163, 174460), (220, 129259), (244, 116545), (260, 109373), (286, 99430), (305, 93236), (326, 87230), (572, 49715), (610, 46618), (652, 43615), (671, 42380), (715, 39772), (793, 35860), (815, 34892), (1220, 23309), (1342, 21190), (1430, 19886), (1586, 17930), (1630, 17446), (1793, 15860), (2119, 13420), (2684, 10595), (2860, 9943), (3172, 8965), (3260, 8723), (3355, 8476), (3586, 7930), (3965, 7172), (4238, 6710)]