21151144

素因数分解:

$2^3\times 7^2\times {\mathrm{79}}^1\times {\mathrm{683}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 46785600

約数和(自身を除く): 25634456

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 79, 98, 158, 196, 316, 392, 553, 632, 683, 1106, 1366, 2212, 2732, 3871, 4424, 4781, 5464, 7742, 9562, 15484, 19124, 30968, 33467, 38248, 53957, 66934, 107914, 133868, 215828, 267736, 377699, 431656, 755398, 1510796, 2643893, 3021592, 5287786, 10575572, 21151144]

約数ペア:

[(1, 21151144), (2, 10575572), (4, 5287786), (7, 3021592), (8, 2643893), (14, 1510796), (28, 755398), (49, 431656), (56, 377699), (79, 267736), (98, 215828), (158, 133868), (196, 107914), (316, 66934), (392, 53957), (553, 38248), (632, 33467), (683, 30968), (1106, 19124), (1366, 15484), (2212, 9562), (2732, 7742), (3871, 5464), (4424, 4781)]