18978390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{487}}^1$

素因数の和:933

約数の個数: 48

約数和(自身を含む): 49559328

約数和(自身を除く): 30580938

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 433, 487, 866, 974, 1299, 1461, 2165, 2435, 2598, 2922, 3897, 4330, 4383, 4870, 6495, 7305, 7794, 8766, 12990, 14610, 19485, 21915, 38970, 43830, 210871, 421742, 632613, 1054355, 1265226, 1897839, 2108710, 3163065, 3795678, 6326130, 9489195, 18978390]

約数ペア:

[(1, 18978390), (2, 9489195), (3, 6326130), (5, 3795678), (6, 3163065), (9, 2108710), (10, 1897839), (15, 1265226), (18, 1054355), (30, 632613), (45, 421742), (90, 210871), (433, 43830), (487, 38970), (866, 21915), (974, 19485), (1299, 14610), (1461, 12990), (2165, 8766), (2435, 7794), (2598, 7305), (2922, 6495), (3897, 4870), (4330, 4383)]