208545220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{3121}}^1$

素因数の和:3400

約数の個数: 48

約数和(自身を含む): 473619888

約数和(自身を除く): 265074668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 257, 260, 514, 1028, 1285, 2570, 3121, 3341, 5140, 6242, 6682, 12484, 13364, 15605, 16705, 31210, 33410, 40573, 62420, 66820, 81146, 162292, 202865, 405730, 802097, 811460, 1604194, 3208388, 4010485, 8020970, 10427261, 16041940, 20854522, 41709044, 52136305, 104272610, 208545220]

約数ペア:

[(1, 208545220), (2, 104272610), (4, 52136305), (5, 41709044), (10, 20854522), (13, 16041940), (20, 10427261), (26, 8020970), (52, 4010485), (65, 3208388), (130, 1604194), (257, 811460), (260, 802097), (514, 405730), (1028, 202865), (1285, 162292), (2570, 81146), (3121, 66820), (3341, 62420), (5140, 40573), (6242, 33410), (6682, 31210), (12484, 16705), (13364, 15605)]