1981890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1$

素因数の和:112

約数の個数: 72

約数和(自身を含む): 5527548

約数和(自身を除く): 3545658

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 61, 90, 95, 114, 122, 171, 183, 190, 285, 305, 342, 361, 366, 549, 570, 610, 722, 855, 915, 1083, 1098, 1159, 1710, 1805, 1830, 2166, 2318, 2745, 3249, 3477, 3610, 5415, 5490, 5795, 6498, 6954, 10431, 10830, 11590, 16245, 17385, 20862, 22021, 32490, 34770, 44042, 52155, 66063, 104310, 110105, 132126, 198189, 220210, 330315, 396378, 660630, 990945, 1981890]

約数ペア:

[(1, 1981890), (2, 990945), (3, 660630), (5, 396378), (6, 330315), (9, 220210), (10, 198189), (15, 132126), (18, 110105), (19, 104310), (30, 66063), (38, 52155), (45, 44042), (57, 34770), (61, 32490), (90, 22021), (95, 20862), (114, 17385), (122, 16245), (171, 11590), (183, 10830), (190, 10431), (285, 6954), (305, 6498), (342, 5795), (361, 5490), (366, 5415), (549, 3610), (570, 3477), (610, 3249), (722, 2745), (855, 2318), (915, 2166), (1083, 1830), (1098, 1805), (1159, 1710)]