1991488980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{82361}}^1$

素因数の和:82417

約数の個数: 96

約数和(自身を含む): 6198893568

約数和(自身を除く): 4207404588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 31, 39, 52, 60, 62, 65, 78, 93, 124, 130, 155, 156, 186, 195, 260, 310, 372, 390, 403, 465, 620, 780, 806, 930, 1209, 1612, 1860, 2015, 2418, 4030, 4836, 6045, 8060, 12090, 24180, 82361, 164722, 247083, 329444, 411805, 494166, 823610, 988332, 1070693, 1235415, 1647220, 2141386, 2470830, 2553191, 3212079, 4282772, 4941660, 5106382, 5353465, 6424158, 7659573, 10212764, 10706930, 12765955, 12848316, 15319146, 16060395, 21413860, 25531910, 30638292, 32120790, 33191483, 38297865, 51063820, 64241580, 66382966, 76595730, 99574449, 132765932, 153191460, 165957415, 199148898, 331914830, 398297796, 497872245, 663829660, 995744490, 1991488980]

約数ペア:

[(1, 1991488980), (2, 995744490), (3, 663829660), (4, 497872245), (5, 398297796), (6, 331914830), (10, 199148898), (12, 165957415), (13, 153191460), (15, 132765932), (20, 99574449), (26, 76595730), (30, 66382966), (31, 64241580), (39, 51063820), (52, 38297865), (60, 33191483), (62, 32120790), (65, 30638292), (78, 25531910), (93, 21413860), (124, 16060395), (130, 15319146), (155, 12848316), (156, 12765955), (186, 10706930), (195, 10212764), (260, 7659573), (310, 6424158), (372, 5353465), (390, 5106382), (403, 4941660), (465, 4282772), (620, 3212079), (780, 2553191), (806, 2470830), (930, 2141386), (1209, 1647220), (1612, 1235415), (1860, 1070693), (2015, 988332), (2418, 823610), (4030, 494166), (4836, 411805), (6045, 329444), (8060, 247083), (12090, 164722), (24180, 82361)]