19898820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{487}}^1$

素因数の和:729

約数の個数: 72

約数和(自身を含む): 60750144

約数和(自身を除く): 40851324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 454, 487, 681, 908, 974, 1135, 1362, 1461, 1948, 2043, 2270, 2435, 2724, 2922, 3405, 4086, 4383, 4540, 4870, 5844, 6810, 7305, 8172, 8766, 9740, 10215, 13620, 14610, 17532, 20430, 21915, 29220, 40860, 43830, 87660, 110549, 221098, 331647, 442196, 552745, 663294, 994941, 1105490, 1326588, 1658235, 1989882, 2210980, 3316470, 3979764, 4974705, 6632940, 9949410, 19898820]

約数ペア:

[(1, 19898820), (2, 9949410), (3, 6632940), (4, 4974705), (5, 3979764), (6, 3316470), (9, 2210980), (10, 1989882), (12, 1658235), (15, 1326588), (18, 1105490), (20, 994941), (30, 663294), (36, 552745), (45, 442196), (60, 331647), (90, 221098), (180, 110549), (227, 87660), (454, 43830), (487, 40860), (681, 29220), (908, 21915), (974, 20430), (1135, 17532), (1362, 14610), (1461, 13620), (1948, 10215), (2043, 9740), (2270, 8766), (2435, 8172), (2724, 7305), (2922, 6810), (3405, 5844), (4086, 4870), (4383, 4540)]