40154980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{421}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 89328960

約数和(自身を除く): 49173980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 251, 380, 421, 502, 842, 1004, 1255, 1684, 2105, 2510, 4210, 4769, 5020, 7999, 8420, 9538, 15998, 19076, 23845, 31996, 39995, 47690, 79990, 95380, 105671, 159980, 211342, 422684, 528355, 1056710, 2007749, 2113420, 4015498, 8030996, 10038745, 20077490, 40154980]

約数ペア:

[(1, 40154980), (2, 20077490), (4, 10038745), (5, 8030996), (10, 4015498), (19, 2113420), (20, 2007749), (38, 1056710), (76, 528355), (95, 422684), (190, 211342), (251, 159980), (380, 105671), (421, 95380), (502, 79990), (842, 47690), (1004, 39995), (1255, 31996), (1684, 23845), (2105, 19076), (2510, 15998), (4210, 9538), (4769, 8420), (5020, 7999)]