81226980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1451}}^1$

素因数の和:1777

約数の個数: 72

約数和(自身を含む): 247351104

約数和(自身を除く): 166124124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 311, 622, 933, 1244, 1451, 1555, 1866, 2799, 2902, 3110, 3732, 4353, 4665, 5598, 5804, 6220, 7255, 8706, 9330, 11196, 13059, 13995, 14510, 17412, 18660, 21765, 26118, 27990, 29020, 43530, 52236, 55980, 65295, 87060, 130590, 261180, 451261, 902522, 1353783, 1805044, 2256305, 2707566, 4061349, 4512610, 5415132, 6768915, 8122698, 9025220, 13537830, 16245396, 20306745, 27075660, 40613490, 81226980]

約数ペア:

[(1, 81226980), (2, 40613490), (3, 27075660), (4, 20306745), (5, 16245396), (6, 13537830), (9, 9025220), (10, 8122698), (12, 6768915), (15, 5415132), (18, 4512610), (20, 4061349), (30, 2707566), (36, 2256305), (45, 1805044), (60, 1353783), (90, 902522), (180, 451261), (311, 261180), (622, 130590), (933, 87060), (1244, 65295), (1451, 55980), (1555, 52236), (1866, 43530), (2799, 29020), (2902, 27990), (3110, 26118), (3732, 21765), (4353, 18660), (4665, 17412), (5598, 14510), (5804, 13995), (6220, 13059), (7255, 11196), (8706, 9330)]