20719500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:768

約数の個数: 96

約数和(自身を含む): 63598080

約数和(自身を除く): 42878580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 25, 30, 38, 50, 57, 60, 75, 76, 95, 100, 114, 125, 150, 190, 228, 250, 285, 300, 375, 380, 475, 500, 570, 727, 750, 950, 1140, 1425, 1454, 1500, 1900, 2181, 2375, 2850, 2908, 3635, 4362, 4750, 5700, 7125, 7270, 8724, 9500, 10905, 13813, 14250, 14540, 18175, 21810, 27626, 28500, 36350, 41439, 43620, 54525, 55252, 69065, 72700, 82878, 90875, 109050, 138130, 165756, 181750, 207195, 218100, 272625, 276260, 345325, 363500, 414390, 545250, 690650, 828780, 1035975, 1090500, 1381300, 1726625, 2071950, 3453250, 4143900, 5179875, 6906500, 10359750, 20719500]

約数ペア:

[(1, 20719500), (2, 10359750), (3, 6906500), (4, 5179875), (5, 4143900), (6, 3453250), (10, 2071950), (12, 1726625), (15, 1381300), (19, 1090500), (20, 1035975), (25, 828780), (30, 690650), (38, 545250), (50, 414390), (57, 363500), (60, 345325), (75, 276260), (76, 272625), (95, 218100), (100, 207195), (114, 181750), (125, 165756), (150, 138130), (190, 109050), (228, 90875), (250, 82878), (285, 72700), (300, 69065), (375, 55252), (380, 54525), (475, 43620), (500, 41439), (570, 36350), (727, 28500), (750, 27626), (950, 21810), (1140, 18175), (1425, 14540), (1454, 14250), (1500, 13813), (1900, 10905), (2181, 9500), (2375, 8724), (2850, 7270), (2908, 7125), (3635, 5700), (4362, 4750)]