21000322564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{281}}^1\times {\mathrm{4973}}^1$

素因数の和:5305

約数の個数: 72

約数和(自身を含む): 42200669448

約数和(自身を除く): 21200346884

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 281, 289, 442, 562, 578, 884, 1124, 1156, 3653, 3757, 4777, 4973, 7306, 7514, 9554, 9946, 14612, 15028, 19108, 19892, 62101, 64649, 81209, 84541, 124202, 129298, 162418, 169082, 248404, 258596, 324836, 338164, 1055717, 1099033, 1397413, 1437197, 2111434, 2198066, 2794826, 2874394, 4222868, 4396132, 5589652, 5748788, 18166369, 18683561, 23756021, 36332738, 37367122, 47512042, 72665476, 74734244, 95024084, 308828273, 403852357, 617656546, 807704714, 1235313092, 1615409428, 5250080641, 10500161282, 21000322564]

約数ペア:

[(1, 21000322564), (2, 10500161282), (4, 5250080641), (13, 1615409428), (17, 1235313092), (26, 807704714), (34, 617656546), (52, 403852357), (68, 308828273), (221, 95024084), (281, 74734244), (289, 72665476), (442, 47512042), (562, 37367122), (578, 36332738), (884, 23756021), (1124, 18683561), (1156, 18166369), (3653, 5748788), (3757, 5589652), (4777, 4396132), (4973, 4222868), (7306, 2874394), (7514, 2794826), (9554, 2198066), (9946, 2111434), (14612, 1437197), (15028, 1397413), (19108, 1099033), (19892, 1055717), (62101, 338164), (64649, 324836), (81209, 258596), (84541, 248404), (124202, 169082), (129298, 162418)]