20404713160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1\times {\mathrm{1249}}^1$

素因数の和:1715

約数の個数: 128

約数和(自身を含む): 50179500000

約数和(自身を除く): 29774786840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 89, 104, 130, 178, 260, 353, 356, 445, 520, 706, 712, 890, 1157, 1249, 1412, 1765, 1780, 2314, 2498, 2824, 3530, 3560, 4589, 4628, 4996, 5785, 6245, 7060, 9178, 9256, 9992, 11570, 12490, 14120, 16237, 18356, 22945, 23140, 24980, 31417, 32474, 36712, 45890, 46280, 49960, 62834, 64948, 81185, 91780, 111161, 125668, 129896, 157085, 162370, 183560, 222322, 251336, 314170, 324740, 408421, 440897, 444644, 555805, 628340, 649480, 816842, 881794, 889288, 1111610, 1256680, 1445093, 1633684, 1763588, 2042105, 2204485, 2223220, 2890186, 3267368, 3527176, 4084210, 4408970, 4446440, 5731661, 5780372, 7225465, 8168420, 8817940, 11463322, 11560744, 14450930, 16336840, 17635880, 22926644, 28658305, 28901860, 39239833, 45853288, 57316610, 57803720, 78479666, 114633220, 156959332, 196199165, 229266440, 313918664, 392398330, 510117829, 784796660, 1020235658, 1569593320, 2040471316, 2550589145, 4080942632, 5101178290, 10202356580, 20404713160]

約数ペア:

[(1, 20404713160), (2, 10202356580), (4, 5101178290), (5, 4080942632), (8, 2550589145), (10, 2040471316), (13, 1569593320), (20, 1020235658), (26, 784796660), (40, 510117829), (52, 392398330), (65, 313918664), (89, 229266440), (104, 196199165), (130, 156959332), (178, 114633220), (260, 78479666), (353, 57803720), (356, 57316610), (445, 45853288), (520, 39239833), (706, 28901860), (712, 28658305), (890, 22926644), (1157, 17635880), (1249, 16336840), (1412, 14450930), (1765, 11560744), (1780, 11463322), (2314, 8817940), (2498, 8168420), (2824, 7225465), (3530, 5780372), (3560, 5731661), (4589, 4446440), (4628, 4408970), (4996, 4084210), (5785, 3527176), (6245, 3267368), (7060, 2890186), (9178, 2223220), (9256, 2204485), (9992, 2042105), (11570, 1763588), (12490, 1633684), (14120, 1445093), (16237, 1256680), (18356, 1111610), (22945, 889288), (23140, 881794), (24980, 816842), (31417, 649480), (32474, 628340), (36712, 555805), (45890, 444644), (46280, 440897), (49960, 408421), (62834, 324740), (64948, 314170), (81185, 251336), (91780, 222322), (111161, 183560), (125668, 162370), (129896, 157085)]