40381970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 78579720

約数和(自身を除く): 38197750

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 157, 170, 178, 289, 314, 445, 578, 785, 890, 1445, 1513, 1570, 2669, 2890, 3026, 5338, 7565, 13345, 13973, 15130, 25721, 26690, 27946, 45373, 51442, 69865, 90746, 128605, 139730, 226865, 237541, 257210, 453730, 475082, 1187705, 2375410, 4038197, 8076394, 20190985, 40381970]

約数ペア:

[(1, 40381970), (2, 20190985), (5, 8076394), (10, 4038197), (17, 2375410), (34, 1187705), (85, 475082), (89, 453730), (157, 257210), (170, 237541), (178, 226865), (289, 139730), (314, 128605), (445, 90746), (578, 69865), (785, 51442), (890, 45373), (1445, 27946), (1513, 26690), (1570, 25721), (2669, 15130), (2890, 13973), (3026, 13345), (5338, 7565)]