18728996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 38949120

約数和(自身を除く): 20220124

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 137, 143, 239, 274, 286, 478, 548, 572, 956, 1507, 1781, 2629, 3014, 3107, 3562, 5258, 6028, 6214, 7124, 10516, 12428, 19591, 32743, 34177, 39182, 65486, 68354, 78364, 130972, 136708, 360173, 425659, 720346, 851318, 1440692, 1702636, 4682249, 9364498, 18728996]

約数ペア:

[(1, 18728996), (2, 9364498), (4, 4682249), (11, 1702636), (13, 1440692), (22, 851318), (26, 720346), (44, 425659), (52, 360173), (137, 136708), (143, 130972), (239, 78364), (274, 68354), (286, 65486), (478, 39182), (548, 34177), (572, 32743), (956, 19591), (1507, 12428), (1781, 10516), (2629, 7124), (3014, 6214), (3107, 6028), (3562, 5258)]