81619020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:540

約数の個数: 144

約数和(自身を含む): 285212928

約数和(自身を除く): 203593908

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 211, 252, 307, 315, 420, 422, 614, 630, 633, 844, 921, 1055, 1228, 1260, 1266, 1477, 1535, 1842, 1899, 2110, 2149, 2532, 2763, 2954, 3070, 3165, 3684, 3798, 4220, 4298, 4431, 4605, 5526, 5908, 6140, 6330, 6447, 7385, 7596, 8596, 8862, 9210, 9495, 10745, 11052, 12660, 12894, 13293, 13815, 14770, 17724, 18420, 18990, 19341, 21490, 22155, 25788, 26586, 27630, 29540, 32235, 37980, 38682, 42980, 44310, 53172, 55260, 64470, 64777, 66465, 77364, 88620, 96705, 128940, 129554, 132930, 193410, 194331, 259108, 265860, 323885, 386820, 388662, 453439, 582993, 647770, 777324, 906878, 971655, 1165986, 1295540, 1360317, 1813756, 1943310, 2267195, 2331972, 2720634, 2914965, 3886620, 4080951, 4534390, 5441268, 5829930, 6801585, 8161902, 9068780, 11659860, 13603170, 16323804, 20404755, 27206340, 40809510, 81619020]

約数ペア:

[(1, 81619020), (2, 40809510), (3, 27206340), (4, 20404755), (5, 16323804), (6, 13603170), (7, 11659860), (9, 9068780), (10, 8161902), (12, 6801585), (14, 5829930), (15, 5441268), (18, 4534390), (20, 4080951), (21, 3886620), (28, 2914965), (30, 2720634), (35, 2331972), (36, 2267195), (42, 1943310), (45, 1813756), (60, 1360317), (63, 1295540), (70, 1165986), (84, 971655), (90, 906878), (105, 777324), (126, 647770), (140, 582993), (180, 453439), (210, 388662), (211, 386820), (252, 323885), (307, 265860), (315, 259108), (420, 194331), (422, 193410), (614, 132930), (630, 129554), (633, 128940), (844, 96705), (921, 88620), (1055, 77364), (1228, 66465), (1260, 64777), (1266, 64470), (1477, 55260), (1535, 53172), (1842, 44310), (1899, 42980), (2110, 38682), (2149, 37980), (2532, 32235), (2763, 29540), (2954, 27630), (3070, 26586), (3165, 25788), (3684, 22155), (3798, 21490), (4220, 19341), (4298, 18990), (4431, 18420), (4605, 17724), (5526, 14770), (5908, 13815), (6140, 13293), (6330, 12894), (6447, 12660), (7385, 11052), (7596, 10745), (8596, 9495), (8862, 9210)]