21840030

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{457}}^1$

素因数の和:535

約数の個数: 80

約数和(自身を含む): 59851440

約数和(自身を除く): 38011410

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 59, 81, 90, 118, 135, 162, 177, 270, 295, 354, 405, 457, 531, 590, 810, 885, 914, 1062, 1371, 1593, 1770, 2285, 2655, 2742, 3186, 4113, 4570, 4779, 5310, 6855, 7965, 8226, 9558, 12339, 13710, 15930, 20565, 23895, 24678, 26963, 37017, 41130, 47790, 53926, 61695, 74034, 80889, 123390, 134815, 161778, 185085, 242667, 269630, 370170, 404445, 485334, 728001, 808890, 1213335, 1456002, 2184003, 2426670, 3640005, 4368006, 7280010, 10920015, 21840030]

約数ペア:

[(1, 21840030), (2, 10920015), (3, 7280010), (5, 4368006), (6, 3640005), (9, 2426670), (10, 2184003), (15, 1456002), (18, 1213335), (27, 808890), (30, 728001), (45, 485334), (54, 404445), (59, 370170), (81, 269630), (90, 242667), (118, 185085), (135, 161778), (162, 134815), (177, 123390), (270, 80889), (295, 74034), (354, 61695), (405, 53926), (457, 47790), (531, 41130), (590, 37017), (810, 26963), (885, 24678), (914, 23895), (1062, 20565), (1371, 15930), (1593, 13710), (1770, 12339), (2285, 9558), (2655, 8226), (2742, 7965), (3186, 6855), (4113, 5310), (4570, 4779)]