19890804970

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1\times {\mathrm{1297}}^1$

素因数の和:2207

約数の個数: 64

約数和(自身を含む): 37639590912

約数和(自身を除く): 17748785942

約数列:

[1, 2, 5, 10, 31, 61, 62, 122, 155, 305, 310, 610, 811, 1297, 1622, 1891, 2594, 3782, 4055, 6485, 8110, 9455, 12970, 18910, 25141, 40207, 49471, 50282, 79117, 80414, 98942, 125705, 158234, 201035, 247355, 251410, 395585, 402070, 494710, 791170, 1051867, 1533601, 2103734, 2452627, 3067202, 4905254, 5259335, 7668005, 10518670, 12263135, 15336010, 24526270, 32607877, 64163887, 65215754, 128327774, 163039385, 320819435, 326078770, 641638870, 1989080497, 3978160994, 9945402485, 19890804970]

約数ペア:

[(1, 19890804970), (2, 9945402485), (5, 3978160994), (10, 1989080497), (31, 641638870), (61, 326078770), (62, 320819435), (122, 163039385), (155, 128327774), (305, 65215754), (310, 64163887), (610, 32607877), (811, 24526270), (1297, 15336010), (1622, 12263135), (1891, 10518670), (2594, 7668005), (3782, 5259335), (4055, 4905254), (6485, 3067202), (8110, 2452627), (9455, 2103734), (12970, 1533601), (18910, 1051867), (25141, 791170), (40207, 494710), (49471, 402070), (50282, 395585), (79117, 251410), (80414, 247355), (98942, 201035), (125705, 158234)]