778822060

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{521}}^1\times {\mathrm{1823}}^1$

素因数の和:2394

約数の個数: 48

約数和(自身を含む): 1679553792

約数和(自身を除く): 900731732

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 521, 820, 1042, 1823, 2084, 2605, 3646, 5210, 7292, 9115, 10420, 18230, 21361, 36460, 42722, 74743, 85444, 106805, 149486, 213610, 298972, 373715, 427220, 747430, 949783, 1494860, 1899566, 3799132, 4748915, 9497830, 18995660, 38941103, 77882206, 155764412, 194705515, 389411030, 778822060]

約数ペア:

[(1, 778822060), (2, 389411030), (4, 194705515), (5, 155764412), (10, 77882206), (20, 38941103), (41, 18995660), (82, 9497830), (164, 4748915), (205, 3799132), (410, 1899566), (521, 1494860), (820, 949783), (1042, 747430), (1823, 427220), (2084, 373715), (2605, 298972), (3646, 213610), (5210, 149486), (7292, 106805), (9115, 85444), (10420, 74743), (18230, 42722), (21361, 36460)]