20111560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:387

約数の個数: 96

約数和(自身を含む): 54501120

約数和(自身を除く): 34389560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 49, 56, 62, 70, 98, 124, 140, 155, 196, 217, 245, 248, 280, 310, 331, 392, 434, 490, 620, 662, 868, 980, 1085, 1240, 1324, 1519, 1655, 1736, 1960, 2170, 2317, 2648, 3038, 3310, 4340, 4634, 6076, 6620, 7595, 8680, 9268, 10261, 11585, 12152, 13240, 15190, 16219, 18536, 20522, 23170, 30380, 32438, 41044, 46340, 51305, 60760, 64876, 71827, 81095, 82088, 92680, 102610, 129752, 143654, 162190, 205220, 287308, 324380, 359135, 410440, 502789, 574616, 648760, 718270, 1005578, 1436540, 2011156, 2513945, 2873080, 4022312, 5027890, 10055780, 20111560]

約数ペア:

[(1, 20111560), (2, 10055780), (4, 5027890), (5, 4022312), (7, 2873080), (8, 2513945), (10, 2011156), (14, 1436540), (20, 1005578), (28, 718270), (31, 648760), (35, 574616), (40, 502789), (49, 410440), (56, 359135), (62, 324380), (70, 287308), (98, 205220), (124, 162190), (140, 143654), (155, 129752), (196, 102610), (217, 92680), (245, 82088), (248, 81095), (280, 71827), (310, 64876), (331, 60760), (392, 51305), (434, 46340), (490, 41044), (620, 32438), (662, 30380), (868, 23170), (980, 20522), (1085, 18536), (1240, 16219), (1324, 15190), (1519, 13240), (1655, 12152), (1736, 11585), (1960, 10261), (2170, 9268), (2317, 8680), (2648, 7595), (3038, 6620), (3310, 6076), (4340, 4634)]