21489156

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 64484784

約数和(自身を除く): 42995628

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 37, 39, 51, 52, 68, 73, 74, 78, 102, 111, 117, 146, 148, 153, 156, 204, 219, 221, 222, 234, 292, 306, 333, 438, 442, 444, 468, 481, 612, 629, 657, 663, 666, 876, 884, 949, 962, 1241, 1258, 1314, 1326, 1332, 1443, 1887, 1898, 1924, 1989, 2482, 2516, 2628, 2652, 2701, 2847, 2886, 3723, 3774, 3796, 3978, 4329, 4964, 5402, 5661, 5694, 5772, 7446, 7548, 7956, 8103, 8177, 8541, 8658, 10804, 11169, 11322, 11388, 14892, 16133, 16206, 16354, 17082, 17316, 22338, 22644, 24309, 24531, 32266, 32412, 32708, 34164, 35113, 44676, 45917, 48399, 48618, 49062, 64532, 70226, 73593, 91834, 96798, 97236, 98124, 105339, 137751, 140452, 145197, 147186, 183668, 193596, 210678, 275502, 290394, 294372, 316017, 413253, 421356, 551004, 580788, 596921, 632034, 826506, 1193842, 1264068, 1653012, 1790763, 2387684, 3581526, 5372289, 7163052, 10744578, 21489156]

約数ペア:

[(1, 21489156), (2, 10744578), (3, 7163052), (4, 5372289), (6, 3581526), (9, 2387684), (12, 1790763), (13, 1653012), (17, 1264068), (18, 1193842), (26, 826506), (34, 632034), (36, 596921), (37, 580788), (39, 551004), (51, 421356), (52, 413253), (68, 316017), (73, 294372), (74, 290394), (78, 275502), (102, 210678), (111, 193596), (117, 183668), (146, 147186), (148, 145197), (153, 140452), (156, 137751), (204, 105339), (219, 98124), (221, 97236), (222, 96798), (234, 91834), (292, 73593), (306, 70226), (333, 64532), (438, 49062), (442, 48618), (444, 48399), (468, 45917), (481, 44676), (612, 35113), (629, 34164), (657, 32708), (663, 32412), (666, 32266), (876, 24531), (884, 24309), (949, 22644), (962, 22338), (1241, 17316), (1258, 17082), (1314, 16354), (1326, 16206), (1332, 16133), (1443, 14892), (1887, 11388), (1898, 11322), (1924, 11169), (1989, 10804), (2482, 8658), (2516, 8541), (2628, 8177), (2652, 8103), (2701, 7956), (2847, 7548), (2886, 7446), (3723, 5772), (3774, 5694), (3796, 5661), (3978, 5402), (4329, 4964)]