16278100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 37497600

約数和(自身を除く): 21219500

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 59, 62, 89, 100, 118, 124, 155, 178, 236, 295, 310, 356, 445, 590, 620, 775, 890, 1180, 1475, 1550, 1780, 1829, 2225, 2759, 2950, 3100, 3658, 4450, 5251, 5518, 5900, 7316, 8900, 9145, 10502, 11036, 13795, 18290, 21004, 26255, 27590, 36580, 45725, 52510, 55180, 68975, 91450, 105020, 131275, 137950, 162781, 182900, 262550, 275900, 325562, 525100, 651124, 813905, 1627810, 3255620, 4069525, 8139050, 16278100]

約数ペア:

[(1, 16278100), (2, 8139050), (4, 4069525), (5, 3255620), (10, 1627810), (20, 813905), (25, 651124), (31, 525100), (50, 325562), (59, 275900), (62, 262550), (89, 182900), (100, 162781), (118, 137950), (124, 131275), (155, 105020), (178, 91450), (236, 68975), (295, 55180), (310, 52510), (356, 45725), (445, 36580), (590, 27590), (620, 26255), (775, 21004), (890, 18290), (1180, 13795), (1475, 11036), (1550, 10502), (1780, 9145), (1829, 8900), (2225, 7316), (2759, 5900), (2950, 5518), (3100, 5251), (3658, 4450)]