128878900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2339}}^1$

素因数の和:2401

約数の個数: 72

約数和(自身を含む): 304668000

約数和(自身を除く): 175789100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 29, 38, 50, 58, 76, 95, 100, 116, 145, 190, 290, 380, 475, 551, 580, 725, 950, 1102, 1450, 1900, 2204, 2339, 2755, 2900, 4678, 5510, 9356, 11020, 11695, 13775, 23390, 27550, 44441, 46780, 55100, 58475, 67831, 88882, 116950, 135662, 177764, 222205, 233900, 271324, 339155, 444410, 678310, 888820, 1111025, 1288789, 1356620, 1695775, 2222050, 2577578, 3391550, 4444100, 5155156, 6443945, 6783100, 12887890, 25775780, 32219725, 64439450, 128878900]

約数ペア:

[(1, 128878900), (2, 64439450), (4, 32219725), (5, 25775780), (10, 12887890), (19, 6783100), (20, 6443945), (25, 5155156), (29, 4444100), (38, 3391550), (50, 2577578), (58, 2222050), (76, 1695775), (95, 1356620), (100, 1288789), (116, 1111025), (145, 888820), (190, 678310), (290, 444410), (380, 339155), (475, 271324), (551, 233900), (580, 222205), (725, 177764), (950, 135662), (1102, 116950), (1450, 88882), (1900, 67831), (2204, 58475), (2339, 55100), (2755, 46780), (2900, 44441), (4678, 27550), (5510, 23390), (9356, 13775), (11020, 11695)]