399652680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{475777}}^1$

素因数の和:475798

約数の個数: 64

約数和(自身を含む): 1370240640

約数和(自身を除く): 970587960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 475777, 951554, 1427331, 1903108, 2378885, 2854662, 3330439, 3806216, 4757770, 5709324, 6660878, 7136655, 9515540, 9991317, 11418648, 13321756, 14273310, 16652195, 19031080, 19982634, 26643512, 28546620, 33304390, 39965268, 49956585, 57093240, 66608780, 79930536, 99913170, 133217560, 199826340, 399652680]

約数ペア:

[(1, 399652680), (2, 199826340), (3, 133217560), (4, 99913170), (5, 79930536), (6, 66608780), (7, 57093240), (8, 49956585), (10, 39965268), (12, 33304390), (14, 28546620), (15, 26643512), (20, 19982634), (21, 19031080), (24, 16652195), (28, 14273310), (30, 13321756), (35, 11418648), (40, 9991317), (42, 9515540), (56, 7136655), (60, 6660878), (70, 5709324), (84, 4757770), (105, 3806216), (120, 3330439), (140, 2854662), (168, 2378885), (210, 1903108), (280, 1427331), (420, 951554), (840, 475777)]