18967900

素因数分解:

$2^2\times 5^2\times 7^4\times {\mathrm{79}}^1$

素因数の和:121

約数の個数: 90

約数和(自身を含む): 48625360

約数和(自身を除く): 29657460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 79, 98, 100, 140, 158, 175, 196, 245, 316, 343, 350, 395, 490, 553, 686, 700, 790, 980, 1106, 1225, 1372, 1580, 1715, 1975, 2212, 2401, 2450, 2765, 3430, 3871, 3950, 4802, 4900, 5530, 6860, 7742, 7900, 8575, 9604, 11060, 12005, 13825, 15484, 17150, 19355, 24010, 27097, 27650, 34300, 38710, 48020, 54194, 55300, 60025, 77420, 96775, 108388, 120050, 135485, 189679, 193550, 240100, 270970, 379358, 387100, 541940, 677425, 758716, 948395, 1354850, 1896790, 2709700, 3793580, 4741975, 9483950, 18967900]

約数ペア:

[(1, 18967900), (2, 9483950), (4, 4741975), (5, 3793580), (7, 2709700), (10, 1896790), (14, 1354850), (20, 948395), (25, 758716), (28, 677425), (35, 541940), (49, 387100), (50, 379358), (70, 270970), (79, 240100), (98, 193550), (100, 189679), (140, 135485), (158, 120050), (175, 108388), (196, 96775), (245, 77420), (316, 60025), (343, 55300), (350, 54194), (395, 48020), (490, 38710), (553, 34300), (686, 27650), (700, 27097), (790, 24010), (980, 19355), (1106, 17150), (1225, 15484), (1372, 13825), (1580, 12005), (1715, 11060), (1975, 9604), (2212, 8575), (2401, 7900), (2450, 7742), (2765, 6860), (3430, 5530), (3871, 4900), (3950, 4802)]