20678970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3119}}^1$

素因数の和:3159

約数の個数: 64

約数和(自身を含む): 56609280

約数和(自身を除く): 35930310

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 195, 221, 255, 390, 442, 510, 663, 1105, 1326, 2210, 3119, 3315, 6238, 6630, 9357, 15595, 18714, 31190, 40547, 46785, 53023, 81094, 93570, 106046, 121641, 159069, 202735, 243282, 265115, 318138, 405470, 530230, 608205, 689299, 795345, 1216410, 1378598, 1590690, 2067897, 3446495, 4135794, 6892990, 10339485, 20678970]

約数ペア:

[(1, 20678970), (2, 10339485), (3, 6892990), (5, 4135794), (6, 3446495), (10, 2067897), (13, 1590690), (15, 1378598), (17, 1216410), (26, 795345), (30, 689299), (34, 608205), (39, 530230), (51, 405470), (65, 318138), (78, 265115), (85, 243282), (102, 202735), (130, 159069), (170, 121641), (195, 106046), (221, 93570), (255, 81094), (390, 53023), (442, 46785), (510, 40547), (663, 31190), (1105, 18714), (1326, 15595), (2210, 9357), (3119, 6630), (3315, 6238)]