20404797700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1\times {\mathrm{1123}}^1$

素因数の和:1502

約数の個数: 144

約数和(自身を含む): 51349463424

約数和(自身を除く): 30944665724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 101, 140, 175, 202, 257, 350, 404, 505, 514, 700, 707, 1010, 1028, 1123, 1285, 1414, 1799, 2020, 2246, 2525, 2570, 2828, 3535, 3598, 4492, 5050, 5140, 5615, 6425, 7070, 7196, 7861, 8995, 10100, 11230, 12850, 14140, 15722, 17675, 17990, 22460, 25700, 25957, 28075, 31444, 35350, 35980, 39305, 44975, 51914, 56150, 70700, 78610, 89950, 103828, 112300, 113423, 129785, 157220, 179900, 181699, 196525, 226846, 259570, 288611, 363398, 393050, 453692, 519140, 567115, 577222, 648925, 726796, 786100, 793961, 908495, 1134230, 1154444, 1297850, 1443055, 1587922, 1816990, 2020277, 2268460, 2595700, 2835575, 2886110, 3175844, 3633980, 3969805, 4040554, 4542475, 5671150, 5772220, 7215275, 7939610, 8081108, 9084950, 10101385, 11342300, 14430550, 15879220, 18169900, 19849025, 20202770, 28861100, 29149711, 39698050, 40405540, 50506925, 58299422, 79396100, 101013850, 116598844, 145748555, 202027700, 204047977, 291497110, 408095954, 582994220, 728742775, 816191908, 1020239885, 1457485550, 2040479770, 2914971100, 4080959540, 5101199425, 10202398850, 20404797700]

約数ペア:

[(1, 20404797700), (2, 10202398850), (4, 5101199425), (5, 4080959540), (7, 2914971100), (10, 2040479770), (14, 1457485550), (20, 1020239885), (25, 816191908), (28, 728742775), (35, 582994220), (50, 408095954), (70, 291497110), (100, 204047977), (101, 202027700), (140, 145748555), (175, 116598844), (202, 101013850), (257, 79396100), (350, 58299422), (404, 50506925), (505, 40405540), (514, 39698050), (700, 29149711), (707, 28861100), (1010, 20202770), (1028, 19849025), (1123, 18169900), (1285, 15879220), (1414, 14430550), (1799, 11342300), (2020, 10101385), (2246, 9084950), (2525, 8081108), (2570, 7939610), (2828, 7215275), (3535, 5772220), (3598, 5671150), (4492, 4542475), (5050, 4040554), (5140, 3969805), (5615, 3633980), (6425, 3175844), (7070, 2886110), (7196, 2835575), (7861, 2595700), (8995, 2268460), (10100, 2020277), (11230, 1816990), (12850, 1587922), (14140, 1443055), (15722, 1297850), (17675, 1154444), (17990, 1134230), (22460, 908495), (25700, 793961), (25957, 786100), (28075, 726796), (31444, 648925), (35350, 577222), (35980, 567115), (39305, 519140), (44975, 453692), (51914, 393050), (56150, 363398), (70700, 288611), (78610, 259570), (89950, 226846), (103828, 196525), (112300, 181699), (113423, 179900), (129785, 157220)]