21981400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{2243}}^1$

素因数の和:2273

約数の個数: 72

約数和(自身を含む): 59477220

約数和(自身を除く): 37495820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2243, 2450, 4486, 4900, 8972, 9800, 11215, 15701, 17944, 22430, 31402, 44860, 56075, 62804, 78505, 89720, 109907, 112150, 125608, 157010, 219814, 224300, 314020, 392525, 439628, 448600, 549535, 628040, 785050, 879256, 1099070, 1570100, 2198140, 2747675, 3140200, 4396280, 5495350, 10990700, 21981400]

約数ペア:

[(1, 21981400), (2, 10990700), (4, 5495350), (5, 4396280), (7, 3140200), (8, 2747675), (10, 2198140), (14, 1570100), (20, 1099070), (25, 879256), (28, 785050), (35, 628040), (40, 549535), (49, 448600), (50, 439628), (56, 392525), (70, 314020), (98, 224300), (100, 219814), (140, 157010), (175, 125608), (196, 112150), (200, 109907), (245, 89720), (280, 78505), (350, 62804), (392, 56075), (490, 44860), (700, 31402), (980, 22430), (1225, 17944), (1400, 15701), (1960, 11215), (2243, 9800), (2450, 8972), (4486, 4900)]