20496910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{439}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25122290

約数列:

[1, 2, 5, 7, 10, 14, 23, 29, 35, 46, 58, 70, 115, 145, 161, 203, 230, 290, 322, 406, 439, 667, 805, 878, 1015, 1334, 1610, 2030, 2195, 3073, 3335, 4390, 4669, 6146, 6670, 9338, 10097, 12731, 15365, 20194, 23345, 25462, 30730, 46690, 50485, 63655, 70679, 89117, 100970, 127310, 141358, 178234, 292813, 353395, 445585, 585626, 706790, 891170, 1464065, 2049691, 2928130, 4099382, 10248455, 20496910]

約数ペア:

[(1, 20496910), (2, 10248455), (5, 4099382), (7, 2928130), (10, 2049691), (14, 1464065), (23, 891170), (29, 706790), (35, 585626), (46, 445585), (58, 353395), (70, 292813), (115, 178234), (145, 141358), (161, 127310), (203, 100970), (230, 89117), (290, 70679), (322, 63655), (406, 50485), (439, 46690), (667, 30730), (805, 25462), (878, 23345), (1015, 20194), (1334, 15365), (1610, 12731), (2030, 10097), (2195, 9338), (3073, 6670), (3335, 6146), (4390, 4669)]