85398820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^2$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 205975224

約数和(自身を除く): 120576404

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 139, 170, 221, 260, 278, 340, 442, 556, 695, 884, 1105, 1390, 1807, 2210, 2363, 2780, 3614, 4420, 4726, 7228, 9035, 9452, 11815, 18070, 19321, 23630, 30719, 36140, 38642, 47260, 61438, 77284, 96605, 122876, 153595, 193210, 251173, 307190, 328457, 386420, 502346, 614380, 656914, 1004692, 1255865, 1313828, 1642285, 2511730, 3284570, 4269941, 5023460, 6569140, 8539882, 17079764, 21349705, 42699410, 85398820]

約数ペア:

[(1, 85398820), (2, 42699410), (4, 21349705), (5, 17079764), (10, 8539882), (13, 6569140), (17, 5023460), (20, 4269941), (26, 3284570), (34, 2511730), (52, 1642285), (65, 1313828), (68, 1255865), (85, 1004692), (130, 656914), (139, 614380), (170, 502346), (221, 386420), (260, 328457), (278, 307190), (340, 251173), (442, 193210), (556, 153595), (695, 122876), (884, 96605), (1105, 77284), (1390, 61438), (1807, 47260), (2210, 38642), (2363, 36140), (2780, 30719), (3614, 23630), (4420, 19321), (4726, 18070), (7228, 11815), (9035, 9452)]