20071980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5869}}^1$

素因数の和:5903

約数の個数: 72

約数和(自身を含む): 64100400

約数和(自身を除く): 44028420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 5869, 11738, 17607, 23476, 29345, 35214, 52821, 58690, 70428, 88035, 105642, 111511, 117380, 176070, 211284, 223022, 264105, 334533, 352140, 446044, 528210, 557555, 669066, 1003599, 1056420, 1115110, 1338132, 1672665, 2007198, 2230220, 3345330, 4014396, 5017995, 6690660, 10035990, 20071980]

約数ペア:

[(1, 20071980), (2, 10035990), (3, 6690660), (4, 5017995), (5, 4014396), (6, 3345330), (9, 2230220), (10, 2007198), (12, 1672665), (15, 1338132), (18, 1115110), (19, 1056420), (20, 1003599), (30, 669066), (36, 557555), (38, 528210), (45, 446044), (57, 352140), (60, 334533), (76, 264105), (90, 223022), (95, 211284), (114, 176070), (171, 117380), (180, 111511), (190, 105642), (228, 88035), (285, 70428), (342, 58690), (380, 52821), (570, 35214), (684, 29345), (855, 23476), (1140, 17607), (1710, 11738), (3420, 5869)]