20158487720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1\times {\mathrm{2423}}^1$

素因数の和:3175

約数の個数: 128

約数和(自身を含む): 53140285440

約数和(自身を除く): 32981797720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 691, 860, 1204, 1382, 1505, 1720, 2408, 2423, 2764, 3010, 3455, 4837, 4846, 5528, 6020, 6910, 9674, 9692, 12040, 12115, 13820, 16961, 19348, 19384, 24185, 24230, 27640, 29713, 33922, 38696, 48370, 48460, 59426, 67844, 84805, 96740, 96920, 104189, 118852, 135688, 148565, 169610, 193480, 207991, 208378, 237704, 297130, 339220, 415982, 416756, 520945, 594260, 678440, 729323, 831964, 833512, 1039955, 1041890, 1188520, 1458646, 1663928, 1674293, 2079910, 2083780, 2917292, 3348586, 3646615, 4159820, 4167560, 5834584, 6697172, 7293230, 8319640, 8371465, 11720051, 13394344, 14586460, 16742930, 23440102, 29172920, 33485860, 46880204, 58600255, 66971720, 71994599, 93760408, 117200510, 143989198, 234401020, 287978396, 359972995, 468802040, 503962193, 575956792, 719945990, 1007924386, 1439891980, 2015848772, 2519810965, 2879783960, 4031697544, 5039621930, 10079243860, 20158487720]

約数ペア:

[(1, 20158487720), (2, 10079243860), (4, 5039621930), (5, 4031697544), (7, 2879783960), (8, 2519810965), (10, 2015848772), (14, 1439891980), (20, 1007924386), (28, 719945990), (35, 575956792), (40, 503962193), (43, 468802040), (56, 359972995), (70, 287978396), (86, 234401020), (140, 143989198), (172, 117200510), (215, 93760408), (280, 71994599), (301, 66971720), (344, 58600255), (430, 46880204), (602, 33485860), (691, 29172920), (860, 23440102), (1204, 16742930), (1382, 14586460), (1505, 13394344), (1720, 11720051), (2408, 8371465), (2423, 8319640), (2764, 7293230), (3010, 6697172), (3455, 5834584), (4837, 4167560), (4846, 4159820), (5528, 3646615), (6020, 3348586), (6910, 2917292), (9674, 2083780), (9692, 2079910), (12040, 1674293), (12115, 1663928), (13820, 1458646), (16961, 1188520), (19348, 1041890), (19384, 1039955), (24185, 833512), (24230, 831964), (27640, 729323), (29713, 678440), (33922, 594260), (38696, 520945), (48370, 416756), (48460, 415982), (59426, 339220), (67844, 297130), (84805, 237704), (96740, 208378), (96920, 207991), (104189, 193480), (118852, 169610), (135688, 148565)]