21881920

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 112

約数和(自身を含む): 56692800

約数和(自身を除く): 34810880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 59, 61, 64, 76, 80, 95, 118, 122, 152, 160, 190, 236, 244, 295, 304, 305, 320, 380, 472, 488, 590, 608, 610, 760, 944, 976, 1121, 1159, 1180, 1216, 1220, 1520, 1888, 1952, 2242, 2318, 2360, 2440, 3040, 3599, 3776, 3904, 4484, 4636, 4720, 4880, 5605, 5795, 6080, 7198, 8968, 9272, 9440, 9760, 11210, 11590, 14396, 17936, 17995, 18544, 18880, 19520, 22420, 23180, 28792, 35872, 35990, 37088, 44840, 46360, 57584, 68381, 71744, 71980, 74176, 89680, 92720, 115168, 136762, 143960, 179360, 185440, 230336, 273524, 287920, 341905, 358720, 370880, 547048, 575840, 683810, 1094096, 1151680, 1367620, 2188192, 2735240, 4376384, 5470480, 10940960, 21881920]

約数ペア:

[(1, 21881920), (2, 10940960), (4, 5470480), (5, 4376384), (8, 2735240), (10, 2188192), (16, 1367620), (19, 1151680), (20, 1094096), (32, 683810), (38, 575840), (40, 547048), (59, 370880), (61, 358720), (64, 341905), (76, 287920), (80, 273524), (95, 230336), (118, 185440), (122, 179360), (152, 143960), (160, 136762), (190, 115168), (236, 92720), (244, 89680), (295, 74176), (304, 71980), (305, 71744), (320, 68381), (380, 57584), (472, 46360), (488, 44840), (590, 37088), (608, 35990), (610, 35872), (760, 28792), (944, 23180), (976, 22420), (1121, 19520), (1159, 18880), (1180, 18544), (1216, 17995), (1220, 17936), (1520, 14396), (1888, 11590), (1952, 11210), (2242, 9760), (2318, 9440), (2360, 9272), (2440, 8968), (3040, 7198), (3599, 6080), (3776, 5795), (3904, 5605), (4484, 4880), (4636, 4720)]