80278420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 192931200

約数和(自身を除く): 112652780

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 43, 68, 76, 85, 86, 95, 170, 172, 190, 215, 289, 323, 340, 380, 430, 578, 646, 731, 817, 860, 1156, 1292, 1445, 1462, 1615, 1634, 2890, 2924, 3230, 3268, 3655, 4085, 4913, 5491, 5780, 6460, 7310, 8170, 9826, 10982, 12427, 13889, 14620, 16340, 19652, 21964, 24565, 24854, 27455, 27778, 49130, 49708, 54910, 55556, 62135, 69445, 93347, 98260, 109820, 124270, 138890, 186694, 211259, 236113, 248540, 277780, 373388, 422518, 466735, 472226, 845036, 933470, 944452, 1056295, 1180565, 1866940, 2112590, 2361130, 4013921, 4225180, 4722260, 8027842, 16055684, 20069605, 40139210, 80278420]

約数ペア:

[(1, 80278420), (2, 40139210), (4, 20069605), (5, 16055684), (10, 8027842), (17, 4722260), (19, 4225180), (20, 4013921), (34, 2361130), (38, 2112590), (43, 1866940), (68, 1180565), (76, 1056295), (85, 944452), (86, 933470), (95, 845036), (170, 472226), (172, 466735), (190, 422518), (215, 373388), (289, 277780), (323, 248540), (340, 236113), (380, 211259), (430, 186694), (578, 138890), (646, 124270), (731, 109820), (817, 98260), (860, 93347), (1156, 69445), (1292, 62135), (1445, 55556), (1462, 54910), (1615, 49708), (1634, 49130), (2890, 27778), (2924, 27455), (3230, 24854), (3268, 24565), (3655, 21964), (4085, 19652), (4913, 16340), (5491, 14620), (5780, 13889), (6460, 12427), (7310, 10982), (8170, 9826)]