21369276

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 56600544

約数和(自身を除く): 35231268

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 61, 74, 111, 122, 148, 183, 222, 244, 263, 333, 366, 444, 526, 549, 666, 732, 789, 1052, 1098, 1332, 1578, 2196, 2257, 2367, 3156, 4514, 4734, 6771, 9028, 9468, 9731, 13542, 16043, 19462, 20313, 27084, 29193, 32086, 38924, 40626, 48129, 58386, 64172, 81252, 87579, 96258, 116772, 144387, 175158, 192516, 288774, 350316, 577548, 593591, 1187182, 1780773, 2374364, 3561546, 5342319, 7123092, 10684638, 21369276]

約数ペア:

[(1, 21369276), (2, 10684638), (3, 7123092), (4, 5342319), (6, 3561546), (9, 2374364), (12, 1780773), (18, 1187182), (36, 593591), (37, 577548), (61, 350316), (74, 288774), (111, 192516), (122, 175158), (148, 144387), (183, 116772), (222, 96258), (244, 87579), (263, 81252), (333, 64172), (366, 58386), (444, 48129), (526, 40626), (549, 38924), (666, 32086), (732, 29193), (789, 27084), (1052, 20313), (1098, 19462), (1332, 16043), (1578, 13542), (2196, 9731), (2257, 9468), (2367, 9028), (3156, 6771), (4514, 4734)]