19666980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2953}}^1$

素因数の和:3005

約数の個数: 72

約数和(自身を含む): 61289592

約数和(自身を除く): 41622612

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 2953, 3330, 5906, 6660, 8859, 11812, 14765, 17718, 26577, 29530, 35436, 44295, 53154, 59060, 88590, 106308, 109261, 132885, 177180, 218522, 265770, 327783, 437044, 531540, 546305, 655566, 983349, 1092610, 1311132, 1638915, 1966698, 2185220, 3277830, 3933396, 4916745, 6555660, 9833490, 19666980]

約数ペア:

[(1, 19666980), (2, 9833490), (3, 6555660), (4, 4916745), (5, 3933396), (6, 3277830), (9, 2185220), (10, 1966698), (12, 1638915), (15, 1311132), (18, 1092610), (20, 983349), (30, 655566), (36, 546305), (37, 531540), (45, 437044), (60, 327783), (74, 265770), (90, 218522), (111, 177180), (148, 132885), (180, 109261), (185, 106308), (222, 88590), (333, 59060), (370, 53154), (444, 44295), (555, 35436), (666, 29530), (740, 26577), (1110, 17718), (1332, 14765), (1665, 11812), (2220, 8859), (2953, 6660), (3330, 5906)]