21290412

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{653}}^1$

素因数の和:703

約数の個数: 96

約数和(自身を含む): 61528320

約数和(自身を除く): 40237908

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 19, 22, 26, 33, 38, 39, 44, 52, 57, 66, 76, 78, 114, 132, 143, 156, 209, 228, 247, 286, 418, 429, 494, 572, 627, 653, 741, 836, 858, 988, 1254, 1306, 1482, 1716, 1959, 2508, 2612, 2717, 2964, 3918, 5434, 7183, 7836, 8151, 8489, 10868, 12407, 14366, 16302, 16978, 21549, 24814, 25467, 28732, 32604, 33956, 37221, 43098, 49628, 50934, 74442, 86196, 93379, 101868, 136477, 148884, 161291, 186758, 272954, 280137, 322582, 373516, 409431, 483873, 545908, 560274, 645164, 818862, 967746, 1120548, 1637724, 1774201, 1935492, 3548402, 5322603, 7096804, 10645206, 21290412]

約数ペア:

[(1, 21290412), (2, 10645206), (3, 7096804), (4, 5322603), (6, 3548402), (11, 1935492), (12, 1774201), (13, 1637724), (19, 1120548), (22, 967746), (26, 818862), (33, 645164), (38, 560274), (39, 545908), (44, 483873), (52, 409431), (57, 373516), (66, 322582), (76, 280137), (78, 272954), (114, 186758), (132, 161291), (143, 148884), (156, 136477), (209, 101868), (228, 93379), (247, 86196), (286, 74442), (418, 50934), (429, 49628), (494, 43098), (572, 37221), (627, 33956), (653, 32604), (741, 28732), (836, 25467), (858, 24814), (988, 21549), (1254, 16978), (1306, 16302), (1482, 14366), (1716, 12407), (1959, 10868), (2508, 8489), (2612, 8151), (2717, 7836), (2964, 7183), (3918, 5434)]