19848520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^3\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 47919600

約数和(自身を除く): 28071080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 101, 136, 170, 202, 289, 340, 404, 505, 578, 680, 808, 1010, 1156, 1445, 1717, 2020, 2312, 2890, 3434, 4040, 4913, 5780, 6868, 8585, 9826, 11560, 13736, 17170, 19652, 24565, 29189, 34340, 39304, 49130, 58378, 68680, 98260, 116756, 145945, 196520, 233512, 291890, 496213, 583780, 992426, 1167560, 1984852, 2481065, 3969704, 4962130, 9924260, 19848520]

約数ペア:

[(1, 19848520), (2, 9924260), (4, 4962130), (5, 3969704), (8, 2481065), (10, 1984852), (17, 1167560), (20, 992426), (34, 583780), (40, 496213), (68, 291890), (85, 233512), (101, 196520), (136, 145945), (170, 116756), (202, 98260), (289, 68680), (340, 58378), (404, 49130), (505, 39304), (578, 34340), (680, 29189), (808, 24565), (1010, 19652), (1156, 17170), (1445, 13736), (1717, 11560), (2020, 9826), (2312, 8585), (2890, 6868), (3434, 5780), (4040, 4913)]