20177839984

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1\times {\mathrm{1229}}^1$

素因数の和:1766

約数の個数: 80

約数和(自身を含む): 40997376000

約数和(自身を除く): 20819536016

約数列:

[1, 2, 4, 8, 16, 31, 62, 79, 124, 158, 248, 316, 419, 496, 632, 838, 1229, 1264, 1676, 2449, 2458, 3352, 4898, 4916, 6704, 9796, 9832, 12989, 19592, 19664, 25978, 33101, 38099, 39184, 51956, 66202, 76198, 97091, 103912, 132404, 152396, 194182, 207824, 264808, 304792, 388364, 514951, 529616, 609584, 776728, 1026131, 1029902, 1553456, 2052262, 2059804, 3009821, 4104524, 4119608, 6019642, 8209048, 8239216, 12039284, 15963481, 16418096, 24078568, 31926962, 40681129, 48157136, 63853924, 81362258, 127707848, 162724516, 255415696, 325449032, 650898064, 1261114999, 2522229998, 5044459996, 10088919992, 20177839984]

約数ペア:

[(1, 20177839984), (2, 10088919992), (4, 5044459996), (8, 2522229998), (16, 1261114999), (31, 650898064), (62, 325449032), (79, 255415696), (124, 162724516), (158, 127707848), (248, 81362258), (316, 63853924), (419, 48157136), (496, 40681129), (632, 31926962), (838, 24078568), (1229, 16418096), (1264, 15963481), (1676, 12039284), (2449, 8239216), (2458, 8209048), (3352, 6019642), (4898, 4119608), (4916, 4104524), (6704, 3009821), (9796, 2059804), (9832, 2052262), (12989, 1553456), (19592, 1029902), (19664, 1026131), (25978, 776728), (33101, 609584), (38099, 529616), (39184, 514951), (51956, 388364), (66202, 304792), (76198, 264808), (97091, 207824), (103912, 194182), (132404, 152396)]