19378720

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3907}}^1$

素因数の和:3953

約数の個数: 48

約数和(自身を含む): 47271168

約数和(自身を除く): 27892448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 3907, 4960, 7814, 15628, 19535, 31256, 39070, 62512, 78140, 121117, 125024, 156280, 242234, 312560, 484468, 605585, 625120, 968936, 1211170, 1937872, 2422340, 3875744, 4844680, 9689360, 19378720]

約数ペア:

[(1, 19378720), (2, 9689360), (4, 4844680), (5, 3875744), (8, 2422340), (10, 1937872), (16, 1211170), (20, 968936), (31, 625120), (32, 605585), (40, 484468), (62, 312560), (80, 242234), (124, 156280), (155, 125024), (160, 121117), (248, 78140), (310, 62512), (496, 39070), (620, 31256), (992, 19535), (1240, 15628), (2480, 7814), (3907, 4960)]