18890480

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 52585920

約数和(自身を除く): 33695440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 61, 70, 79, 80, 98, 112, 122, 140, 158, 196, 244, 245, 280, 305, 316, 392, 395, 427, 488, 490, 553, 560, 610, 632, 784, 790, 854, 976, 980, 1106, 1220, 1264, 1580, 1708, 1960, 2135, 2212, 2440, 2765, 2989, 3160, 3416, 3871, 3920, 4270, 4424, 4819, 4880, 5530, 5978, 6320, 6832, 7742, 8540, 8848, 9638, 11060, 11956, 14945, 15484, 17080, 19276, 19355, 22120, 23912, 24095, 29890, 30968, 33733, 34160, 38552, 38710, 44240, 47824, 48190, 59780, 61936, 67466, 77104, 77420, 96380, 119560, 134932, 154840, 168665, 192760, 236131, 239120, 269864, 309680, 337330, 385520, 472262, 539728, 674660, 944524, 1180655, 1349320, 1889048, 2361310, 2698640, 3778096, 4722620, 9445240, 18890480]

約数ペア:

[(1, 18890480), (2, 9445240), (4, 4722620), (5, 3778096), (7, 2698640), (8, 2361310), (10, 1889048), (14, 1349320), (16, 1180655), (20, 944524), (28, 674660), (35, 539728), (40, 472262), (49, 385520), (56, 337330), (61, 309680), (70, 269864), (79, 239120), (80, 236131), (98, 192760), (112, 168665), (122, 154840), (140, 134932), (158, 119560), (196, 96380), (244, 77420), (245, 77104), (280, 67466), (305, 61936), (316, 59780), (392, 48190), (395, 47824), (427, 44240), (488, 38710), (490, 38552), (553, 34160), (560, 33733), (610, 30968), (632, 29890), (784, 24095), (790, 23912), (854, 22120), (976, 19355), (980, 19276), (1106, 17080), (1220, 15484), (1264, 14945), (1580, 11956), (1708, 11060), (1960, 9638), (2135, 8848), (2212, 8540), (2440, 7742), (2765, 6832), (2989, 6320), (3160, 5978), (3416, 5530), (3871, 4880), (3920, 4819), (4270, 4424)]