21865480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6007}}^1$

素因数の和:6038

約数の個数: 64

約数和(自身を含む): 60560640

約数和(自身を除く): 38695160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 6007, 12014, 24028, 30035, 42049, 48056, 60070, 78091, 84098, 120140, 156182, 168196, 210245, 240280, 312364, 336392, 390455, 420490, 546637, 624728, 780910, 840980, 1093274, 1561820, 1681960, 2186548, 2733185, 3123640, 4373096, 5466370, 10932740, 21865480]

約数ペア:

[(1, 21865480), (2, 10932740), (4, 5466370), (5, 4373096), (7, 3123640), (8, 2733185), (10, 2186548), (13, 1681960), (14, 1561820), (20, 1093274), (26, 840980), (28, 780910), (35, 624728), (40, 546637), (52, 420490), (56, 390455), (65, 336392), (70, 312364), (91, 240280), (104, 210245), (130, 168196), (140, 156182), (182, 120140), (260, 84098), (280, 78091), (364, 60070), (455, 48056), (520, 42049), (728, 30035), (910, 24028), (1820, 12014), (3640, 6007)]