16956420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21739}}^1$

素因数の和:21764

約数の個数: 48

約数和(自身を含む): 51132480

約数和(自身を除く): 34176060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 21739, 43478, 65217, 86956, 108695, 130434, 217390, 260868, 282607, 326085, 434780, 565214, 652170, 847821, 1130428, 1304340, 1413035, 1695642, 2826070, 3391284, 4239105, 5652140, 8478210, 16956420]

約数ペア:

[(1, 16956420), (2, 8478210), (3, 5652140), (4, 4239105), (5, 3391284), (6, 2826070), (10, 1695642), (12, 1413035), (13, 1304340), (15, 1130428), (20, 847821), (26, 652170), (30, 565214), (39, 434780), (52, 326085), (60, 282607), (65, 260868), (78, 217390), (130, 130434), (156, 108695), (195, 86956), (260, 65217), (390, 43478), (780, 21739)]