21604748

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 44499840

約数和(自身を除く): 22895092

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 601, 817, 836, 946, 1202, 1634, 1892, 2404, 3268, 6611, 8987, 11419, 13222, 17974, 22838, 25843, 26444, 35948, 45676, 51686, 103372, 125609, 251218, 284273, 491017, 502436, 568546, 982034, 1137092, 1964068, 5401187, 10802374, 21604748]

約数ペア:

[(1, 21604748), (2, 10802374), (4, 5401187), (11, 1964068), (19, 1137092), (22, 982034), (38, 568546), (43, 502436), (44, 491017), (76, 284273), (86, 251218), (172, 125609), (209, 103372), (418, 51686), (473, 45676), (601, 35948), (817, 26444), (836, 25843), (946, 22838), (1202, 17974), (1634, 13222), (1892, 11419), (2404, 8987), (3268, 6611)]