81541980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{34847}}^1$

素因数の和:34875

約数の個数: 72

約数和(自身を含む): 266378112

約数和(自身を除く): 184836132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 34847, 69694, 104541, 139388, 174235, 209082, 313623, 348470, 418164, 453011, 522705, 627246, 696940, 906022, 1045410, 1254492, 1359033, 1568115, 1812044, 2090820, 2265055, 2718066, 3136230, 4077099, 4530110, 5436132, 6272460, 6795165, 8154198, 9060220, 13590330, 16308396, 20385495, 27180660, 40770990, 81541980]

約数ペア:

[(1, 81541980), (2, 40770990), (3, 27180660), (4, 20385495), (5, 16308396), (6, 13590330), (9, 9060220), (10, 8154198), (12, 6795165), (13, 6272460), (15, 5436132), (18, 4530110), (20, 4077099), (26, 3136230), (30, 2718066), (36, 2265055), (39, 2090820), (45, 1812044), (52, 1568115), (60, 1359033), (65, 1254492), (78, 1045410), (90, 906022), (117, 696940), (130, 627246), (156, 522705), (180, 453011), (195, 418164), (234, 348470), (260, 313623), (390, 209082), (468, 174235), (585, 139388), (780, 104541), (1170, 69694), (2340, 34847)]