18658220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 46347840

約数和(自身を除く): 27689620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 241, 245, 316, 395, 482, 490, 553, 790, 964, 980, 1106, 1205, 1580, 1687, 2212, 2410, 2765, 3374, 3871, 4820, 5530, 6748, 7742, 8435, 11060, 11809, 15484, 16870, 19039, 19355, 23618, 33740, 38078, 38710, 47236, 59045, 76156, 77420, 95195, 118090, 133273, 190390, 236180, 266546, 380780, 533092, 666365, 932911, 1332730, 1865822, 2665460, 3731644, 4664555, 9329110, 18658220]

約数ペア:

[(1, 18658220), (2, 9329110), (4, 4664555), (5, 3731644), (7, 2665460), (10, 1865822), (14, 1332730), (20, 932911), (28, 666365), (35, 533092), (49, 380780), (70, 266546), (79, 236180), (98, 190390), (140, 133273), (158, 118090), (196, 95195), (241, 77420), (245, 76156), (316, 59045), (395, 47236), (482, 38710), (490, 38078), (553, 33740), (790, 23618), (964, 19355), (980, 19039), (1106, 16870), (1205, 15484), (1580, 11809), (1687, 11060), (2212, 8435), (2410, 7742), (2765, 6748), (3374, 5530), (3871, 4820)]