18211880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{773}}^1$

素因数の和:834

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 26370520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 773, 1178, 1240, 1546, 2356, 2945, 3092, 3865, 4712, 5890, 6184, 7730, 11780, 14687, 15460, 23560, 23963, 29374, 30920, 47926, 58748, 73435, 95852, 117496, 119815, 146870, 191704, 239630, 293740, 455297, 479260, 587480, 910594, 958520, 1821188, 2276485, 3642376, 4552970, 9105940, 18211880]

約数ペア:

[(1, 18211880), (2, 9105940), (4, 4552970), (5, 3642376), (8, 2276485), (10, 1821188), (19, 958520), (20, 910594), (31, 587480), (38, 479260), (40, 455297), (62, 293740), (76, 239630), (95, 191704), (124, 146870), (152, 119815), (155, 117496), (190, 95852), (248, 73435), (310, 58748), (380, 47926), (589, 30920), (620, 29374), (760, 23963), (773, 23560), (1178, 15460), (1240, 14687), (1546, 11780), (2356, 7730), (2945, 6184), (3092, 5890), (3865, 4712)]