20515721900

素因数分解:

$2^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{727}}^1\times {\mathrm{4783}}^1$

素因数の和:5583

約数の個数: 72

約数和(自身を含む): 45345431040

約数和(自身を除く): 24829709140

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 59, 100, 118, 236, 295, 590, 727, 1180, 1454, 1475, 2908, 2950, 3635, 4783, 5900, 7270, 9566, 14540, 18175, 19132, 23915, 36350, 42893, 47830, 72700, 85786, 95660, 119575, 171572, 214465, 239150, 282197, 428930, 478300, 564394, 857860, 1072325, 1128788, 1410985, 2144650, 2821970, 3477241, 4289300, 5643940, 6954482, 7054925, 13908964, 14109850, 17386205, 28219700, 34772410, 69544820, 86931025, 173862050, 205157219, 347724100, 410314438, 820628876, 1025786095, 2051572190, 4103144380, 5128930475, 10257860950, 20515721900]

約数ペア:

[(1, 20515721900), (2, 10257860950), (4, 5128930475), (5, 4103144380), (10, 2051572190), (20, 1025786095), (25, 820628876), (50, 410314438), (59, 347724100), (100, 205157219), (118, 173862050), (236, 86931025), (295, 69544820), (590, 34772410), (727, 28219700), (1180, 17386205), (1454, 14109850), (1475, 13908964), (2908, 7054925), (2950, 6954482), (3635, 5643940), (4783, 4289300), (5900, 3477241), (7270, 2821970), (9566, 2144650), (14540, 1410985), (18175, 1128788), (19132, 1072325), (23915, 857860), (36350, 564394), (42893, 478300), (47830, 428930), (72700, 282197), (85786, 239150), (95660, 214465), (119575, 171572)]