21000724492

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{571}}^1$

素因数の和:911

約数の個数: 96

約数和(自身を含む): 41610336768

約数和(自身を除く): 20609612276

約数列:

[1, 2, 4, 11, 22, 44, 61, 71, 122, 142, 193, 244, 284, 386, 571, 671, 772, 781, 1142, 1342, 1562, 2123, 2284, 2684, 3124, 4246, 4331, 6281, 8492, 8662, 11773, 12562, 13703, 17324, 23546, 25124, 27406, 34831, 40541, 47092, 47641, 54812, 69662, 81082, 95282, 110203, 129503, 139324, 150733, 162164, 190564, 220406, 259006, 301466, 383141, 440812, 445951, 518012, 602932, 766282, 835883, 891902, 1212233, 1532564, 1671766, 1783804, 2424466, 2473001, 3343532, 4848932, 4946002, 6722383, 7824413, 9194713, 9892004, 13444766, 15648826, 18389426, 26889532, 27203011, 31297652, 36778852, 54406022, 73946213, 86068543, 108812044, 147892426, 172137086, 295784852, 344274172, 477289193, 954578386, 1909156772, 5250181123, 10500362246, 21000724492]

約数ペア:

[(1, 21000724492), (2, 10500362246), (4, 5250181123), (11, 1909156772), (22, 954578386), (44, 477289193), (61, 344274172), (71, 295784852), (122, 172137086), (142, 147892426), (193, 108812044), (244, 86068543), (284, 73946213), (386, 54406022), (571, 36778852), (671, 31297652), (772, 27203011), (781, 26889532), (1142, 18389426), (1342, 15648826), (1562, 13444766), (2123, 9892004), (2284, 9194713), (2684, 7824413), (3124, 6722383), (4246, 4946002), (4331, 4848932), (6281, 3343532), (8492, 2473001), (8662, 2424466), (11773, 1783804), (12562, 1671766), (13703, 1532564), (17324, 1212233), (23546, 891902), (25124, 835883), (27406, 766282), (34831, 602932), (40541, 518012), (47092, 445951), (47641, 440812), (54812, 383141), (69662, 301466), (81082, 259006), (95282, 220406), (110203, 190564), (129503, 162164), (139324, 150733)]