21727420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 33140036

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 71, 107, 110, 130, 142, 143, 214, 220, 260, 284, 286, 355, 428, 535, 572, 710, 715, 781, 923, 1070, 1177, 1391, 1420, 1430, 1562, 1846, 2140, 2354, 2782, 2860, 3124, 3692, 3905, 4615, 4708, 5564, 5885, 6955, 7597, 7810, 9230, 10153, 11770, 13910, 15194, 15301, 15620, 18460, 20306, 23540, 27820, 30388, 30602, 37985, 40612, 50765, 61204, 75970, 76505, 83567, 98761, 101530, 151940, 153010, 167134, 197522, 203060, 306020, 334268, 395044, 417835, 493805, 835670, 987610, 1086371, 1671340, 1975220, 2172742, 4345484, 5431855, 10863710, 21727420]

約数ペア:

[(1, 21727420), (2, 10863710), (4, 5431855), (5, 4345484), (10, 2172742), (11, 1975220), (13, 1671340), (20, 1086371), (22, 987610), (26, 835670), (44, 493805), (52, 417835), (55, 395044), (65, 334268), (71, 306020), (107, 203060), (110, 197522), (130, 167134), (142, 153010), (143, 151940), (214, 101530), (220, 98761), (260, 83567), (284, 76505), (286, 75970), (355, 61204), (428, 50765), (535, 40612), (572, 37985), (710, 30602), (715, 30388), (781, 27820), (923, 23540), (1070, 20306), (1177, 18460), (1391, 15620), (1420, 15301), (1430, 15194), (1562, 13910), (1846, 11770), (2140, 10153), (2354, 9230), (2782, 7810), (2860, 7597), (3124, 6955), (3692, 5885), (3905, 5564), (4615, 4708)]