28223020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{929}}^1$

素因数の和:983

約数の個数: 72

約数和(自身を含む): 71245440

約数和(自身を除く): 43022420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 929, 980, 1085, 1519, 1858, 2170, 3038, 3716, 4340, 4645, 6076, 6503, 7595, 9290, 13006, 15190, 18580, 26012, 28799, 30380, 32515, 45521, 57598, 65030, 91042, 115196, 130060, 143995, 182084, 201593, 227605, 287990, 403186, 455210, 575980, 806372, 910420, 1007965, 1411151, 2015930, 2822302, 4031860, 5644604, 7055755, 14111510, 28223020]

約数ペア:

[(1, 28223020), (2, 14111510), (4, 7055755), (5, 5644604), (7, 4031860), (10, 2822302), (14, 2015930), (20, 1411151), (28, 1007965), (31, 910420), (35, 806372), (49, 575980), (62, 455210), (70, 403186), (98, 287990), (124, 227605), (140, 201593), (155, 182084), (196, 143995), (217, 130060), (245, 115196), (310, 91042), (434, 65030), (490, 57598), (620, 45521), (868, 32515), (929, 30380), (980, 28799), (1085, 26012), (1519, 18580), (1858, 15190), (2170, 13006), (3038, 9290), (3716, 7595), (4340, 6503), (4645, 6076)]