20919690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 63862344

約数和(自身を除く): 42942654

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 17, 18, 22, 30, 33, 34, 45, 51, 55, 66, 85, 90, 99, 102, 110, 113, 121, 153, 165, 170, 187, 198, 226, 242, 255, 306, 330, 339, 363, 374, 495, 510, 561, 565, 605, 678, 726, 765, 935, 990, 1017, 1089, 1122, 1130, 1210, 1243, 1530, 1683, 1695, 1815, 1870, 1921, 2034, 2057, 2178, 2486, 2805, 3366, 3390, 3630, 3729, 3842, 4114, 5085, 5445, 5610, 5763, 6171, 6215, 7458, 8415, 9605, 10170, 10285, 10890, 11187, 11526, 12342, 12430, 13673, 16830, 17289, 18513, 18645, 19210, 20570, 21131, 22374, 27346, 28815, 30855, 34578, 37026, 37290, 41019, 42262, 55935, 57630, 61710, 63393, 68365, 82038, 86445, 92565, 105655, 111870, 123057, 126786, 136730, 172890, 185130, 190179, 205095, 211310, 232441, 246114, 316965, 380358, 410190, 464882, 615285, 633930, 697323, 950895, 1162205, 1230570, 1394646, 1901790, 2091969, 2324410, 3486615, 4183938, 6973230, 10459845, 20919690]

約数ペア:

[(1, 20919690), (2, 10459845), (3, 6973230), (5, 4183938), (6, 3486615), (9, 2324410), (10, 2091969), (11, 1901790), (15, 1394646), (17, 1230570), (18, 1162205), (22, 950895), (30, 697323), (33, 633930), (34, 615285), (45, 464882), (51, 410190), (55, 380358), (66, 316965), (85, 246114), (90, 232441), (99, 211310), (102, 205095), (110, 190179), (113, 185130), (121, 172890), (153, 136730), (165, 126786), (170, 123057), (187, 111870), (198, 105655), (226, 92565), (242, 86445), (255, 82038), (306, 68365), (330, 63393), (339, 61710), (363, 57630), (374, 55935), (495, 42262), (510, 41019), (561, 37290), (565, 37026), (605, 34578), (678, 30855), (726, 28815), (765, 27346), (935, 22374), (990, 21131), (1017, 20570), (1089, 19210), (1122, 18645), (1130, 18513), (1210, 17289), (1243, 16830), (1530, 13673), (1683, 12430), (1695, 12342), (1815, 11526), (1870, 11187), (1921, 10890), (2034, 10285), (2057, 10170), (2178, 9605), (2486, 8415), (2805, 7458), (3366, 6215), (3390, 6171), (3630, 5763), (3729, 5610), (3842, 5445), (4114, 5085)]