21465060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{991}}^1$

素因数の和:1041

約数の個数: 72

約数和(自身を含む): 63495936

約数和(自身を除く): 42030876

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 991, 1083, 1140, 1444, 1805, 1982, 2166, 2973, 3610, 3964, 4332, 4955, 5415, 5946, 7220, 9910, 10830, 11892, 14865, 18829, 19820, 21660, 29730, 37658, 56487, 59460, 75316, 94145, 112974, 188290, 225948, 282435, 357751, 376580, 564870, 715502, 1073253, 1129740, 1431004, 1788755, 2146506, 3577510, 4293012, 5366265, 7155020, 10732530, 21465060]

約数ペア:

[(1, 21465060), (2, 10732530), (3, 7155020), (4, 5366265), (5, 4293012), (6, 3577510), (10, 2146506), (12, 1788755), (15, 1431004), (19, 1129740), (20, 1073253), (30, 715502), (38, 564870), (57, 376580), (60, 357751), (76, 282435), (95, 225948), (114, 188290), (190, 112974), (228, 94145), (285, 75316), (361, 59460), (380, 56487), (570, 37658), (722, 29730), (991, 21660), (1083, 19820), (1140, 18829), (1444, 14865), (1805, 11892), (1982, 10830), (2166, 9910), (2973, 7220), (3610, 5946), (3964, 5415), (4332, 4955)]