16404220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{881}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 42230160

約数和(自身を除く): 25825940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 881, 931, 980, 1330, 1762, 1862, 2660, 3524, 3724, 4405, 4655, 6167, 8810, 9310, 12334, 16739, 17620, 18620, 24668, 30835, 33478, 43169, 61670, 66956, 83695, 86338, 117173, 123340, 167390, 172676, 215845, 234346, 334780, 431690, 468692, 585865, 820211, 863380, 1171730, 1640422, 2343460, 3280844, 4101055, 8202110, 16404220]

約数ペア:

[(1, 16404220), (2, 8202110), (4, 4101055), (5, 3280844), (7, 2343460), (10, 1640422), (14, 1171730), (19, 863380), (20, 820211), (28, 585865), (35, 468692), (38, 431690), (49, 334780), (70, 234346), (76, 215845), (95, 172676), (98, 167390), (133, 123340), (140, 117173), (190, 86338), (196, 83695), (245, 66956), (266, 61670), (380, 43169), (490, 33478), (532, 30835), (665, 24668), (881, 18620), (931, 17620), (980, 16739), (1330, 12334), (1762, 9310), (1862, 8810), (2660, 6167), (3524, 4655), (3724, 4405)]