18945780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:669

約数の個数: 96

約数和(自身を含む): 61501440

約数和(自身を除く): 42555660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 571, 790, 948, 1106, 1142, 1185, 1580, 1659, 1713, 2212, 2284, 2370, 2765, 2855, 3318, 3426, 3997, 4740, 5530, 5710, 6636, 6852, 7994, 8295, 8565, 11060, 11420, 11991, 15988, 16590, 17130, 19985, 23982, 33180, 34260, 39970, 45109, 47964, 59955, 79940, 90218, 119910, 135327, 180436, 225545, 239820, 270654, 315763, 451090, 541308, 631526, 676635, 902180, 947289, 1263052, 1353270, 1578815, 1894578, 2706540, 3157630, 3789156, 4736445, 6315260, 9472890, 18945780]

約数ペア:

[(1, 18945780), (2, 9472890), (3, 6315260), (4, 4736445), (5, 3789156), (6, 3157630), (7, 2706540), (10, 1894578), (12, 1578815), (14, 1353270), (15, 1263052), (20, 947289), (21, 902180), (28, 676635), (30, 631526), (35, 541308), (42, 451090), (60, 315763), (70, 270654), (79, 239820), (84, 225545), (105, 180436), (140, 135327), (158, 119910), (210, 90218), (237, 79940), (316, 59955), (395, 47964), (420, 45109), (474, 39970), (553, 34260), (571, 33180), (790, 23982), (948, 19985), (1106, 17130), (1142, 16590), (1185, 15988), (1580, 11991), (1659, 11420), (1713, 11060), (2212, 8565), (2284, 8295), (2370, 7994), (2765, 6852), (2855, 6636), (3318, 5710), (3426, 5530), (3997, 4740)]