19945680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2027}}^1$

素因数の和:2084

約数の個数: 80

約数和(自身を含む): 63370944

約数和(自身を除く): 43425264

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2027, 2460, 3280, 4054, 4920, 6081, 8108, 9840, 10135, 12162, 16216, 20270, 24324, 30405, 32432, 40540, 48648, 60810, 81080, 83107, 97296, 121620, 162160, 166214, 243240, 249321, 332428, 415535, 486480, 498642, 664856, 831070, 997284, 1246605, 1329712, 1662140, 1994568, 2493210, 3324280, 3989136, 4986420, 6648560, 9972840, 19945680]

約数ペア:

[(1, 19945680), (2, 9972840), (3, 6648560), (4, 4986420), (5, 3989136), (6, 3324280), (8, 2493210), (10, 1994568), (12, 1662140), (15, 1329712), (16, 1246605), (20, 997284), (24, 831070), (30, 664856), (40, 498642), (41, 486480), (48, 415535), (60, 332428), (80, 249321), (82, 243240), (120, 166214), (123, 162160), (164, 121620), (205, 97296), (240, 83107), (246, 81080), (328, 60810), (410, 48648), (492, 40540), (615, 32432), (656, 30405), (820, 24324), (984, 20270), (1230, 16216), (1640, 12162), (1968, 10135), (2027, 9840), (2460, 8108), (3280, 6081), (4054, 4920)]