211950620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21323}}^1$

素因数の和:21410

約数の個数: 48

約数和(自身を含む): 515870208

約数和(自身を除く): 303919588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 21323, 42646, 85292, 106615, 149261, 213230, 298522, 426460, 597044, 746305, 1492610, 1513933, 2985220, 3027866, 6055732, 7569665, 10597531, 15139330, 21195062, 30278660, 42390124, 52987655, 105975310, 211950620]

約数ペア:

[(1, 211950620), (2, 105975310), (4, 52987655), (5, 42390124), (7, 30278660), (10, 21195062), (14, 15139330), (20, 10597531), (28, 7569665), (35, 6055732), (70, 3027866), (71, 2985220), (140, 1513933), (142, 1492610), (284, 746305), (355, 597044), (497, 426460), (710, 298522), (994, 213230), (1420, 149261), (1988, 106615), (2485, 85292), (4970, 42646), (9940, 21323)]