21101964

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 57435840

約数和(自身を除く): 36333876

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 73, 78, 102, 109, 146, 156, 204, 218, 219, 221, 292, 327, 436, 438, 442, 654, 663, 876, 884, 949, 1241, 1308, 1326, 1417, 1853, 1898, 2482, 2652, 2834, 2847, 3706, 3723, 3796, 4251, 4964, 5559, 5668, 5694, 7412, 7446, 7957, 8502, 11118, 11388, 14892, 15914, 16133, 17004, 22236, 23871, 24089, 31828, 32266, 47742, 48178, 48399, 64532, 72267, 95484, 96356, 96798, 103441, 135269, 144534, 193596, 206882, 270538, 289068, 310323, 405807, 413764, 541076, 620646, 811614, 1241292, 1623228, 1758497, 3516994, 5275491, 7033988, 10550982, 21101964]

約数ペア:

[(1, 21101964), (2, 10550982), (3, 7033988), (4, 5275491), (6, 3516994), (12, 1758497), (13, 1623228), (17, 1241292), (26, 811614), (34, 620646), (39, 541076), (51, 413764), (52, 405807), (68, 310323), (73, 289068), (78, 270538), (102, 206882), (109, 193596), (146, 144534), (156, 135269), (204, 103441), (218, 96798), (219, 96356), (221, 95484), (292, 72267), (327, 64532), (436, 48399), (438, 48178), (442, 47742), (654, 32266), (663, 31828), (876, 24089), (884, 23871), (949, 22236), (1241, 17004), (1308, 16133), (1326, 15914), (1417, 14892), (1853, 11388), (1898, 11118), (2482, 8502), (2652, 7957), (2834, 7446), (2847, 7412), (3706, 5694), (3723, 5668), (3796, 5559), (4251, 4964)]