21084564100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1\times {\mathrm{613}}^1$

素因数の和:1110

約数の個数: 144

約数和(自身を含む): 49479263680

約数和(自身を除く): 28394699580

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 380, 421, 430, 475, 613, 817, 842, 860, 950, 1075, 1226, 1634, 1684, 1900, 2105, 2150, 2452, 3065, 3268, 4085, 4210, 4300, 6130, 7999, 8170, 8420, 10525, 11647, 12260, 15325, 15998, 16340, 18103, 20425, 21050, 23294, 26359, 30650, 31996, 36206, 39995, 40850, 42100, 46588, 52718, 58235, 61300, 72412, 79990, 81700, 90515, 105436, 116470, 131795, 159980, 181030, 199975, 232940, 258073, 263590, 291175, 343957, 362060, 399950, 452575, 500821, 516146, 527180, 582350, 658975, 687914, 799900, 905150, 1001642, 1032292, 1164700, 1290365, 1317950, 1375828, 1719785, 1810300, 2003284, 2504105, 2580730, 2635900, 3439570, 4903387, 5008210, 5161460, 6451825, 6879140, 8598925, 9806774, 10016420, 11097139, 12520525, 12903650, 17197850, 19613548, 22194278, 24516935, 25041050, 25807300, 34395700, 44388556, 49033870, 50082100, 55485695, 98067740, 110971390, 122584675, 210845641, 221942780, 245169350, 277428475, 421691282, 490338700, 554856950, 843382564, 1054228205, 1109713900, 2108456410, 4216912820, 5271141025, 10542282050, 21084564100]

約数ペア:

[(1, 21084564100), (2, 10542282050), (4, 5271141025), (5, 4216912820), (10, 2108456410), (19, 1109713900), (20, 1054228205), (25, 843382564), (38, 554856950), (43, 490338700), (50, 421691282), (76, 277428475), (86, 245169350), (95, 221942780), (100, 210845641), (172, 122584675), (190, 110971390), (215, 98067740), (380, 55485695), (421, 50082100), (430, 49033870), (475, 44388556), (613, 34395700), (817, 25807300), (842, 25041050), (860, 24516935), (950, 22194278), (1075, 19613548), (1226, 17197850), (1634, 12903650), (1684, 12520525), (1900, 11097139), (2105, 10016420), (2150, 9806774), (2452, 8598925), (3065, 6879140), (3268, 6451825), (4085, 5161460), (4210, 5008210), (4300, 4903387), (6130, 3439570), (7999, 2635900), (8170, 2580730), (8420, 2504105), (10525, 2003284), (11647, 1810300), (12260, 1719785), (15325, 1375828), (15998, 1317950), (16340, 1290365), (18103, 1164700), (20425, 1032292), (21050, 1001642), (23294, 905150), (26359, 799900), (30650, 687914), (31996, 658975), (36206, 582350), (39995, 527180), (40850, 516146), (42100, 500821), (46588, 452575), (52718, 399950), (58235, 362060), (61300, 343957), (72412, 291175), (79990, 263590), (81700, 258073), (90515, 232940), (105436, 199975), (116470, 181030), (131795, 159980)]