20871060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 70479360

約数和(自身を除く): 49608300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 229, 245, 294, 310, 372, 420, 434, 458, 465, 490, 588, 620, 651, 687, 735, 868, 916, 930, 980, 1085, 1145, 1302, 1374, 1470, 1519, 1603, 1860, 2170, 2290, 2604, 2748, 2940, 3038, 3206, 3255, 3435, 4340, 4557, 4580, 4809, 6076, 6412, 6510, 6870, 7099, 7595, 8015, 9114, 9618, 11221, 13020, 13740, 14198, 15190, 16030, 18228, 19236, 21297, 22442, 22785, 24045, 28396, 30380, 32060, 33663, 35495, 42594, 44884, 45570, 48090, 49693, 56105, 67326, 70990, 85188, 91140, 96180, 99386, 106485, 112210, 134652, 141980, 149079, 168315, 198772, 212970, 224420, 248465, 298158, 336630, 347851, 425940, 496930, 596316, 673260, 695702, 745395, 993860, 1043553, 1391404, 1490790, 1739255, 2087106, 2981580, 3478510, 4174212, 5217765, 6957020, 10435530, 20871060]

約数ペア:

[(1, 20871060), (2, 10435530), (3, 6957020), (4, 5217765), (5, 4174212), (6, 3478510), (7, 2981580), (10, 2087106), (12, 1739255), (14, 1490790), (15, 1391404), (20, 1043553), (21, 993860), (28, 745395), (30, 695702), (31, 673260), (35, 596316), (42, 496930), (49, 425940), (60, 347851), (62, 336630), (70, 298158), (84, 248465), (93, 224420), (98, 212970), (105, 198772), (124, 168315), (140, 149079), (147, 141980), (155, 134652), (186, 112210), (196, 106485), (210, 99386), (217, 96180), (229, 91140), (245, 85188), (294, 70990), (310, 67326), (372, 56105), (420, 49693), (434, 48090), (458, 45570), (465, 44884), (490, 42594), (588, 35495), (620, 33663), (651, 32060), (687, 30380), (735, 28396), (868, 24045), (916, 22785), (930, 22442), (980, 21297), (1085, 19236), (1145, 18228), (1302, 16030), (1374, 15190), (1470, 14198), (1519, 13740), (1603, 13020), (1860, 11221), (2170, 9618), (2290, 9114), (2604, 8015), (2748, 7595), (2940, 7099), (3038, 6870), (3206, 6510), (3255, 6412), (3435, 6076), (4340, 4809), (4557, 4580)]