21331100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{983}}^1$

素因数の和:1035

約数の個数: 72

約数和(自身を含む): 54663168

約数和(自身を除く): 33332068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 983, 1085, 1550, 1966, 2170, 3100, 3932, 4340, 4915, 5425, 6881, 9830, 10850, 13762, 19660, 21700, 24575, 27524, 30473, 34405, 49150, 60946, 68810, 98300, 121892, 137620, 152365, 172025, 213311, 304730, 344050, 426622, 609460, 688100, 761825, 853244, 1066555, 1523650, 2133110, 3047300, 4266220, 5332775, 10665550, 21331100]

約数ペア:

[(1, 21331100), (2, 10665550), (4, 5332775), (5, 4266220), (7, 3047300), (10, 2133110), (14, 1523650), (20, 1066555), (25, 853244), (28, 761825), (31, 688100), (35, 609460), (50, 426622), (62, 344050), (70, 304730), (100, 213311), (124, 172025), (140, 152365), (155, 137620), (175, 121892), (217, 98300), (310, 68810), (350, 60946), (434, 49150), (620, 34405), (700, 30473), (775, 27524), (868, 24575), (983, 21700), (1085, 19660), (1550, 13762), (1966, 10850), (2170, 9830), (3100, 6881), (3932, 5425), (4340, 4915)]