21345948

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2683}}^1$

素因数の和:2723

約数の個数: 72

約数和(自身を含む): 61549488

約数和(自身を除く): 40203540

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 2683, 3978, 5366, 7956, 8049, 10732, 16098, 24147, 32196, 34879, 45611, 48294, 69758, 91222, 96588, 104637, 136833, 139516, 182444, 209274, 273666, 313911, 410499, 418548, 547332, 592943, 627822, 820998, 1185886, 1255644, 1641996, 1778829, 2371772, 3557658, 5336487, 7115316, 10672974, 21345948]

約数ペア:

[(1, 21345948), (2, 10672974), (3, 7115316), (4, 5336487), (6, 3557658), (9, 2371772), (12, 1778829), (13, 1641996), (17, 1255644), (18, 1185886), (26, 820998), (34, 627822), (36, 592943), (39, 547332), (51, 418548), (52, 410499), (68, 313911), (78, 273666), (102, 209274), (117, 182444), (153, 139516), (156, 136833), (204, 104637), (221, 96588), (234, 91222), (306, 69758), (442, 48294), (468, 45611), (612, 34879), (663, 32196), (884, 24147), (1326, 16098), (1989, 10732), (2652, 8049), (2683, 7956), (3978, 5366)]