19953800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:183

約数の個数: 96

約数和(自身を含む): 50220000

約数和(自身を除く): 30266200

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 59, 76, 89, 95, 100, 118, 152, 178, 190, 200, 236, 295, 356, 380, 445, 472, 475, 590, 712, 760, 890, 950, 1121, 1180, 1475, 1691, 1780, 1900, 2225, 2242, 2360, 2950, 3382, 3560, 3800, 4450, 4484, 5251, 5605, 5900, 6764, 8455, 8900, 8968, 10502, 11210, 11800, 13528, 16910, 17800, 21004, 22420, 26255, 28025, 33820, 42008, 42275, 44840, 52510, 56050, 67640, 84550, 99769, 105020, 112100, 131275, 169100, 199538, 210040, 224200, 262550, 338200, 399076, 498845, 525100, 798152, 997690, 1050200, 1995380, 2494225, 3990760, 4988450, 9976900, 19953800]

約数ペア:

[(1, 19953800), (2, 9976900), (4, 4988450), (5, 3990760), (8, 2494225), (10, 1995380), (19, 1050200), (20, 997690), (25, 798152), (38, 525100), (40, 498845), (50, 399076), (59, 338200), (76, 262550), (89, 224200), (95, 210040), (100, 199538), (118, 169100), (152, 131275), (178, 112100), (190, 105020), (200, 99769), (236, 84550), (295, 67640), (356, 56050), (380, 52510), (445, 44840), (472, 42275), (475, 42008), (590, 33820), (712, 28025), (760, 26255), (890, 22420), (950, 21004), (1121, 17800), (1180, 16910), (1475, 13528), (1691, 11800), (1780, 11210), (1900, 10502), (2225, 8968), (2242, 8900), (2360, 8455), (2950, 6764), (3382, 5900), (3560, 5605), (3800, 5251), (4450, 4484)]