19445140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{523}}^1$

素因数の和:569

約数の個数: 72

約数和(自身を含む): 48329568

約数和(自身を除く): 28884428

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 169, 220, 260, 286, 338, 523, 572, 676, 715, 845, 1046, 1430, 1690, 1859, 2092, 2615, 2860, 3380, 3718, 5230, 5753, 6799, 7436, 9295, 10460, 11506, 13598, 18590, 23012, 27196, 28765, 33995, 37180, 57530, 67990, 74789, 88387, 115060, 135980, 149578, 176774, 299156, 353548, 373945, 441935, 747890, 883870, 972257, 1495780, 1767740, 1944514, 3889028, 4861285, 9722570, 19445140]

約数ペア:

[(1, 19445140), (2, 9722570), (4, 4861285), (5, 3889028), (10, 1944514), (11, 1767740), (13, 1495780), (20, 972257), (22, 883870), (26, 747890), (44, 441935), (52, 373945), (55, 353548), (65, 299156), (110, 176774), (130, 149578), (143, 135980), (169, 115060), (220, 88387), (260, 74789), (286, 67990), (338, 57530), (523, 37180), (572, 33995), (676, 28765), (715, 27196), (845, 23012), (1046, 18590), (1430, 13598), (1690, 11506), (1859, 10460), (2092, 9295), (2615, 7436), (2860, 6799), (3380, 5753), (3718, 5230)]