20112978250

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{73}}^2\times {\mathrm{487}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 39486680064

約数和(自身を除く): 19373701814

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 73, 125, 146, 155, 250, 310, 365, 487, 730, 775, 974, 1550, 1825, 2263, 2435, 3650, 3875, 4526, 4870, 5329, 7750, 9125, 10658, 11315, 12175, 15097, 18250, 22630, 24350, 26645, 30194, 35551, 53290, 56575, 60875, 71102, 75485, 113150, 121750, 133225, 150970, 165199, 177755, 266450, 282875, 330398, 355510, 377425, 565750, 666125, 754850, 825995, 888775, 1102081, 1332250, 1651990, 1777550, 1887125, 2204162, 2595223, 3774250, 4129975, 4443875, 5190446, 5510405, 8259950, 8887750, 11020810, 12976115, 20649875, 25952230, 27552025, 41299750, 55104050, 64880575, 80451913, 129761150, 137760125, 160903826, 275520250, 324402875, 402259565, 648805750, 804519130, 2011297825, 4022595650, 10056489125, 20112978250]

約数ペア:

[(1, 20112978250), (2, 10056489125), (5, 4022595650), (10, 2011297825), (25, 804519130), (31, 648805750), (50, 402259565), (62, 324402875), (73, 275520250), (125, 160903826), (146, 137760125), (155, 129761150), (250, 80451913), (310, 64880575), (365, 55104050), (487, 41299750), (730, 27552025), (775, 25952230), (974, 20649875), (1550, 12976115), (1825, 11020810), (2263, 8887750), (2435, 8259950), (3650, 5510405), (3875, 5190446), (4526, 4443875), (4870, 4129975), (5329, 3774250), (7750, 2595223), (9125, 2204162), (10658, 1887125), (11315, 1777550), (12175, 1651990), (15097, 1332250), (18250, 1102081), (22630, 888775), (24350, 825995), (26645, 754850), (30194, 666125), (35551, 565750), (53290, 377425), (56575, 355510), (60875, 330398), (71102, 282875), (75485, 266450), (113150, 177755), (121750, 165199), (133225, 150970)]