280811780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{7309}}^1$

素因数の和:7448

約数の個数: 48

約数和(自身を含む): 630005040

約数和(自身を除く): 349193260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 113, 170, 226, 340, 452, 565, 1130, 1921, 2260, 3842, 7309, 7684, 9605, 14618, 19210, 29236, 36545, 38420, 73090, 124253, 146180, 248506, 497012, 621265, 825917, 1242530, 1651834, 2485060, 3303668, 4129585, 8259170, 14040589, 16518340, 28081178, 56162356, 70202945, 140405890, 280811780]

約数ペア:

[(1, 280811780), (2, 140405890), (4, 70202945), (5, 56162356), (10, 28081178), (17, 16518340), (20, 14040589), (34, 8259170), (68, 4129585), (85, 3303668), (113, 2485060), (170, 1651834), (226, 1242530), (340, 825917), (452, 621265), (565, 497012), (1130, 248506), (1921, 146180), (2260, 124253), (3842, 73090), (7309, 38420), (7684, 36545), (9605, 29236), (14618, 19210)]