668518420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 1527482880

約数和(自身を除く): 858964460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 163, 172, 190, 215, 251, 326, 380, 430, 502, 652, 815, 817, 860, 1004, 1255, 1630, 1634, 2510, 3097, 3260, 3268, 4085, 4769, 5020, 6194, 7009, 8170, 9538, 10793, 12388, 14018, 15485, 16340, 19076, 21586, 23845, 28036, 30970, 35045, 40913, 43172, 47690, 53965, 61940, 70090, 81826, 95380, 107930, 133171, 140180, 163652, 204565, 205067, 215860, 266342, 409130, 410134, 532684, 665855, 777347, 818260, 820268, 1025335, 1331710, 1554694, 1759259, 2050670, 2663420, 3109388, 3518518, 3886735, 4101340, 7037036, 7773470, 8796295, 15546940, 17592590, 33425921, 35185180, 66851842, 133703684, 167129605, 334259210, 668518420]

約数ペア:

[(1, 668518420), (2, 334259210), (4, 167129605), (5, 133703684), (10, 66851842), (19, 35185180), (20, 33425921), (38, 17592590), (43, 15546940), (76, 8796295), (86, 7773470), (95, 7037036), (163, 4101340), (172, 3886735), (190, 3518518), (215, 3109388), (251, 2663420), (326, 2050670), (380, 1759259), (430, 1554694), (502, 1331710), (652, 1025335), (815, 820268), (817, 818260), (860, 777347), (1004, 665855), (1255, 532684), (1630, 410134), (1634, 409130), (2510, 266342), (3097, 215860), (3260, 205067), (3268, 204565), (4085, 163652), (4769, 140180), (5020, 133171), (6194, 107930), (7009, 95380), (8170, 81826), (9538, 70090), (10793, 61940), (12388, 53965), (14018, 47690), (15485, 43172), (16340, 40913), (19076, 35045), (21586, 30970), (23845, 28036)]