19884780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1811}}^1$

素因数の和:1887

約数の個数: 72

約数和(自身を含む): 61339824

約数和(自身を除く): 41455044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1811, 1830, 2196, 2745, 3622, 3660, 5433, 5490, 7244, 9055, 10866, 10980, 16299, 18110, 21732, 27165, 32598, 36220, 54330, 65196, 81495, 108660, 110471, 162990, 220942, 325980, 331413, 441884, 552355, 662826, 994239, 1104710, 1325652, 1657065, 1988478, 2209420, 3314130, 3976956, 4971195, 6628260, 9942390, 19884780]

約数ペア:

[(1, 19884780), (2, 9942390), (3, 6628260), (4, 4971195), (5, 3976956), (6, 3314130), (9, 2209420), (10, 1988478), (12, 1657065), (15, 1325652), (18, 1104710), (20, 994239), (30, 662826), (36, 552355), (45, 441884), (60, 331413), (61, 325980), (90, 220942), (122, 162990), (180, 110471), (183, 108660), (244, 81495), (305, 65196), (366, 54330), (549, 36220), (610, 32598), (732, 27165), (915, 21732), (1098, 18110), (1220, 16299), (1811, 10980), (1830, 10866), (2196, 9055), (2745, 7244), (3622, 5490), (3660, 5433)]