21105887940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{881}}^1\times {\mathrm{7829}}^1$

素因数の和:8742

約数の個数: 144

約数和(自身を含む): 67872757680

約数和(自身を除く): 46766869740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 881, 1020, 1530, 1762, 2643, 3060, 3524, 4405, 5286, 7829, 7929, 8810, 10572, 13215, 14977, 15658, 15858, 17620, 23487, 26430, 29954, 31316, 31716, 39145, 39645, 44931, 46974, 52860, 59908, 70461, 74885, 78290, 79290, 89862, 93948, 117435, 133093, 134793, 140922, 149770, 156580, 158580, 179724, 224655, 234870, 266186, 269586, 281844, 299540, 352305, 399279, 449310, 469740, 532372, 539172, 665465, 673965, 704610, 798558, 898620, 1197837, 1330930, 1347930, 1409220, 1597116, 1996395, 2395674, 2661860, 2695860, 3992790, 4791348, 5989185, 6897349, 7985580, 11978370, 13794698, 20692047, 23956740, 27589396, 34486745, 41384094, 62076141, 68973490, 82768188, 103460235, 117254933, 124152282, 137946980, 206920470, 234509866, 248304564, 310380705, 351764799, 413840940, 469019732, 586274665, 620761410, 703529598, 1055294397, 1172549330, 1241522820, 1407059196, 1758823995, 2110588794, 2345098660, 3517647990, 4221177588, 5276471985, 7035295980, 10552943970, 21105887940]

約数ペア:

[(1, 21105887940), (2, 10552943970), (3, 7035295980), (4, 5276471985), (5, 4221177588), (6, 3517647990), (9, 2345098660), (10, 2110588794), (12, 1758823995), (15, 1407059196), (17, 1241522820), (18, 1172549330), (20, 1055294397), (30, 703529598), (34, 620761410), (36, 586274665), (45, 469019732), (51, 413840940), (60, 351764799), (68, 310380705), (85, 248304564), (90, 234509866), (102, 206920470), (153, 137946980), (170, 124152282), (180, 117254933), (204, 103460235), (255, 82768188), (306, 68973490), (340, 62076141), (510, 41384094), (612, 34486745), (765, 27589396), (881, 23956740), (1020, 20692047), (1530, 13794698), (1762, 11978370), (2643, 7985580), (3060, 6897349), (3524, 5989185), (4405, 4791348), (5286, 3992790), (7829, 2695860), (7929, 2661860), (8810, 2395674), (10572, 1996395), (13215, 1597116), (14977, 1409220), (15658, 1347930), (15858, 1330930), (17620, 1197837), (23487, 898620), (26430, 798558), (29954, 704610), (31316, 673965), (31716, 665465), (39145, 539172), (39645, 532372), (44931, 469740), (46974, 449310), (52860, 399279), (59908, 352305), (70461, 299540), (74885, 281844), (78290, 269586), (79290, 266186), (89862, 234870), (93948, 224655), (117435, 179724), (133093, 158580), (134793, 156580), (140922, 149770)]