18258380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:655

約数の個数: 72

約数和(自身を含む): 46118016

約数和(自身を除く): 27859636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 601, 620, 868, 980, 1085, 1202, 1519, 2170, 2404, 3005, 3038, 4207, 4340, 6010, 6076, 7595, 8414, 12020, 15190, 16828, 18631, 21035, 29449, 30380, 37262, 42070, 58898, 74524, 84140, 93155, 117796, 130417, 147245, 186310, 260834, 294490, 372620, 521668, 588980, 652085, 912919, 1304170, 1825838, 2608340, 3651676, 4564595, 9129190, 18258380]

約数ペア:

[(1, 18258380), (2, 9129190), (4, 4564595), (5, 3651676), (7, 2608340), (10, 1825838), (14, 1304170), (20, 912919), (28, 652085), (31, 588980), (35, 521668), (49, 372620), (62, 294490), (70, 260834), (98, 186310), (124, 147245), (140, 130417), (155, 117796), (196, 93155), (217, 84140), (245, 74524), (310, 58898), (434, 42070), (490, 37262), (601, 30380), (620, 29449), (868, 21035), (980, 18631), (1085, 16828), (1202, 15190), (1519, 12020), (2170, 8414), (2404, 7595), (3005, 6076), (3038, 6010), (4207, 4340)]