20921376

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{191}}^1$

素因数の和:374

約数の個数: 96

約数和(自身を含む): 63479808

約数和(自身を除く): 42558432

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 163, 168, 191, 224, 326, 336, 382, 489, 573, 652, 672, 764, 978, 1141, 1146, 1304, 1337, 1528, 1956, 2282, 2292, 2608, 2674, 3056, 3423, 3912, 4011, 4564, 4584, 5216, 5348, 6112, 6846, 7824, 8022, 9128, 9168, 10696, 13692, 15648, 16044, 18256, 18336, 21392, 27384, 31133, 32088, 36512, 42784, 54768, 62266, 64176, 93399, 109536, 124532, 128352, 186798, 217931, 249064, 373596, 435862, 498128, 653793, 747192, 871724, 996256, 1307586, 1494384, 1743448, 2615172, 2988768, 3486896, 5230344, 6973792, 10460688, 20921376]

約数ペア:

[(1, 20921376), (2, 10460688), (3, 6973792), (4, 5230344), (6, 3486896), (7, 2988768), (8, 2615172), (12, 1743448), (14, 1494384), (16, 1307586), (21, 996256), (24, 871724), (28, 747192), (32, 653793), (42, 498128), (48, 435862), (56, 373596), (84, 249064), (96, 217931), (112, 186798), (163, 128352), (168, 124532), (191, 109536), (224, 93399), (326, 64176), (336, 62266), (382, 54768), (489, 42784), (573, 36512), (652, 32088), (672, 31133), (764, 27384), (978, 21392), (1141, 18336), (1146, 18256), (1304, 16044), (1337, 15648), (1528, 13692), (1956, 10696), (2282, 9168), (2292, 9128), (2608, 8022), (2674, 7824), (3056, 6846), (3423, 6112), (3912, 5348), (4011, 5216), (4564, 4584)]