78243460

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 168058800

約数和(自身を除く): 89815340

約数列:

[1, 2, 4, 5, 10, 20, 89, 113, 178, 226, 356, 389, 445, 452, 565, 778, 890, 1130, 1556, 1780, 1945, 2260, 3890, 7780, 10057, 20114, 34621, 40228, 43957, 50285, 69242, 87914, 100570, 138484, 173105, 175828, 201140, 219785, 346210, 439570, 692420, 879140, 3912173, 7824346, 15648692, 19560865, 39121730, 78243460]

約数ペア:

[(1, 78243460), (2, 39121730), (4, 19560865), (5, 15648692), (10, 7824346), (20, 3912173), (89, 879140), (113, 692420), (178, 439570), (226, 346210), (356, 219785), (389, 201140), (445, 175828), (452, 173105), (565, 138484), (778, 100570), (890, 87914), (1130, 69242), (1556, 50285), (1780, 43957), (1945, 40228), (2260, 34621), (3890, 20114), (7780, 10057)]