21843980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1567}}^1$

素因数の和:1634

約数の個数: 48

約数和(自身を含む): 49787136

約数和(自身を除く): 27943156

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1567, 2788, 3134, 3485, 6268, 6970, 7835, 13940, 15670, 26639, 31340, 53278, 64247, 106556, 128494, 133195, 256988, 266390, 321235, 532780, 642470, 1092199, 1284940, 2184398, 4368796, 5460995, 10921990, 21843980]

約数ペア:

[(1, 21843980), (2, 10921990), (4, 5460995), (5, 4368796), (10, 2184398), (17, 1284940), (20, 1092199), (34, 642470), (41, 532780), (68, 321235), (82, 266390), (85, 256988), (164, 133195), (170, 128494), (205, 106556), (340, 64247), (410, 53278), (697, 31340), (820, 26639), (1394, 15670), (1567, 13940), (2788, 7835), (3134, 6970), (3485, 6268)]