18261880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 52617600

約数和(自身を除く): 34355720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 29, 35, 40, 52, 56, 58, 65, 70, 91, 104, 116, 130, 140, 145, 173, 182, 203, 232, 260, 280, 290, 346, 364, 377, 406, 455, 520, 580, 692, 728, 754, 812, 865, 910, 1015, 1160, 1211, 1384, 1508, 1624, 1730, 1820, 1885, 2030, 2249, 2422, 2639, 3016, 3460, 3640, 3770, 4060, 4498, 4844, 5017, 5278, 6055, 6920, 7540, 8120, 8996, 9688, 10034, 10556, 11245, 12110, 13195, 15080, 15743, 17992, 20068, 21112, 22490, 24220, 25085, 26390, 31486, 35119, 40136, 44980, 48440, 50170, 52780, 62972, 65221, 70238, 78715, 89960, 100340, 105560, 125944, 130442, 140476, 157430, 175595, 200680, 260884, 280952, 314860, 326105, 351190, 456547, 521768, 629720, 652210, 702380, 913094, 1304420, 1404760, 1826188, 2282735, 2608840, 3652376, 4565470, 9130940, 18261880]

約数ペア:

[(1, 18261880), (2, 9130940), (4, 4565470), (5, 3652376), (7, 2608840), (8, 2282735), (10, 1826188), (13, 1404760), (14, 1304420), (20, 913094), (26, 702380), (28, 652210), (29, 629720), (35, 521768), (40, 456547), (52, 351190), (56, 326105), (58, 314860), (65, 280952), (70, 260884), (91, 200680), (104, 175595), (116, 157430), (130, 140476), (140, 130442), (145, 125944), (173, 105560), (182, 100340), (203, 89960), (232, 78715), (260, 70238), (280, 65221), (290, 62972), (346, 52780), (364, 50170), (377, 48440), (406, 44980), (455, 40136), (520, 35119), (580, 31486), (692, 26390), (728, 25085), (754, 24220), (812, 22490), (865, 21112), (910, 20068), (1015, 17992), (1160, 15743), (1211, 15080), (1384, 13195), (1508, 12110), (1624, 11245), (1730, 10556), (1820, 10034), (1885, 9688), (2030, 8996), (2249, 8120), (2422, 7540), (2639, 6920), (3016, 6055), (3460, 5278), (3640, 5017), (3770, 4844), (4060, 4498)]