28941507

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 52640640

約数和(自身を除く): 23699133

約数列:

[1, 3, 7, 9, 21, 29, 31, 49, 63, 73, 87, 93, 147, 203, 217, 219, 261, 279, 441, 511, 609, 651, 657, 899, 1421, 1519, 1533, 1827, 1953, 2117, 2263, 2697, 3577, 4263, 4557, 4599, 6293, 6351, 6789, 8091, 10731, 12789, 13671, 14819, 15841, 18879, 19053, 20367, 32193, 44051, 44457, 47523, 56637, 65627, 103733, 110887, 132153, 133371, 142569, 196881, 311199, 332661, 396459, 459389, 590643, 933597, 997983, 1378167, 3215723, 4134501, 9647169, 28941507]

約数ペア:

[(1, 28941507), (3, 9647169), (7, 4134501), (9, 3215723), (21, 1378167), (29, 997983), (31, 933597), (49, 590643), (63, 459389), (73, 396459), (87, 332661), (93, 311199), (147, 196881), (203, 142569), (217, 133371), (219, 132153), (261, 110887), (279, 103733), (441, 65627), (511, 56637), (609, 47523), (651, 44457), (657, 44051), (899, 32193), (1421, 20367), (1519, 19053), (1533, 18879), (1827, 15841), (1953, 14819), (2117, 13671), (2263, 12789), (2697, 10731), (3577, 8091), (4263, 6789), (4557, 6351), (4599, 6293)]