21405389200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{7901}}^1$

素因数の和:8453

約数の個数: 120

約数和(自身を含む): 55495651176

約数和(自身を除く): 34090261976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 521, 650, 1040, 1042, 1300, 2084, 2600, 2605, 4168, 5200, 5210, 6773, 7901, 8336, 10420, 13025, 13546, 15802, 20840, 26050, 27092, 31604, 33865, 39505, 41680, 52100, 54184, 63208, 67730, 79010, 102713, 104200, 108368, 126416, 135460, 158020, 169325, 197525, 205426, 208400, 270920, 316040, 338650, 395050, 410852, 513565, 541840, 632080, 677300, 790100, 821704, 1027130, 1354600, 1580200, 1643408, 2054260, 2567825, 2709200, 3160400, 4108520, 4116421, 5135650, 8217040, 8232842, 10271300, 16465684, 20542600, 20582105, 32931368, 41085200, 41164210, 53513473, 65862736, 82328420, 102910525, 107026946, 164656840, 205821050, 214053892, 267567365, 329313680, 411642100, 428107784, 535134730, 823284200, 856215568, 1070269460, 1337836825, 1646568400, 2140538920, 2675673650, 4281077840, 5351347300, 10702694600, 21405389200]

約数ペア:

[(1, 21405389200), (2, 10702694600), (4, 5351347300), (5, 4281077840), (8, 2675673650), (10, 2140538920), (13, 1646568400), (16, 1337836825), (20, 1070269460), (25, 856215568), (26, 823284200), (40, 535134730), (50, 428107784), (52, 411642100), (65, 329313680), (80, 267567365), (100, 214053892), (104, 205821050), (130, 164656840), (200, 107026946), (208, 102910525), (260, 82328420), (325, 65862736), (400, 53513473), (520, 41164210), (521, 41085200), (650, 32931368), (1040, 20582105), (1042, 20542600), (1300, 16465684), (2084, 10271300), (2600, 8232842), (2605, 8217040), (4168, 5135650), (5200, 4116421), (5210, 4108520), (6773, 3160400), (7901, 2709200), (8336, 2567825), (10420, 2054260), (13025, 1643408), (13546, 1580200), (15802, 1354600), (20840, 1027130), (26050, 821704), (27092, 790100), (31604, 677300), (33865, 632080), (39505, 541840), (41680, 513565), (52100, 410852), (54184, 395050), (63208, 338650), (67730, 316040), (79010, 270920), (102713, 208400), (104200, 205426), (108368, 197525), (126416, 169325), (135460, 158020)]