21801930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1663}}^1$

素因数の和:1715

約数の個数: 64

約数和(自身を含む): 57507840

約数和(自身を除く): 35705910

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 23, 30, 38, 46, 57, 69, 95, 114, 115, 138, 190, 230, 285, 345, 437, 570, 690, 874, 1311, 1663, 2185, 2622, 3326, 4370, 4989, 6555, 8315, 9978, 13110, 16630, 24945, 31597, 38249, 49890, 63194, 76498, 94791, 114747, 157985, 189582, 191245, 229494, 315970, 382490, 473955, 573735, 726731, 947910, 1147470, 1453462, 2180193, 3633655, 4360386, 7267310, 10900965, 21801930]

約数ペア:

[(1, 21801930), (2, 10900965), (3, 7267310), (5, 4360386), (6, 3633655), (10, 2180193), (15, 1453462), (19, 1147470), (23, 947910), (30, 726731), (38, 573735), (46, 473955), (57, 382490), (69, 315970), (95, 229494), (114, 191245), (115, 189582), (138, 157985), (190, 114747), (230, 94791), (285, 76498), (345, 63194), (437, 49890), (570, 38249), (690, 31597), (874, 24945), (1311, 16630), (1663, 13110), (2185, 9978), (2622, 8315), (3326, 6555), (4370, 4989)]