21421664

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3203}}^1$

素因数の和:3243

約数の個数: 48

約数和(自身を含む): 48444480

約数和(自身を除く): 27022816

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 76, 88, 152, 176, 209, 304, 352, 418, 608, 836, 1672, 3203, 3344, 6406, 6688, 12812, 25624, 35233, 51248, 60857, 70466, 102496, 121714, 140932, 243428, 281864, 486856, 563728, 669427, 973712, 1127456, 1338854, 1947424, 2677708, 5355416, 10710832, 21421664]

約数ペア:

[(1, 21421664), (2, 10710832), (4, 5355416), (8, 2677708), (11, 1947424), (16, 1338854), (19, 1127456), (22, 973712), (32, 669427), (38, 563728), (44, 486856), (76, 281864), (88, 243428), (152, 140932), (176, 121714), (209, 102496), (304, 70466), (352, 60857), (418, 51248), (608, 35233), (836, 25624), (1672, 12812), (3203, 6688), (3344, 6406)]