161457920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:378

約数の個数: 144

約数和(自身を含む): 431300352

約数和(自身を除く): 269842432

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 313, 320, 403, 416, 496, 520, 620, 626, 640, 806, 832, 992, 1040, 1240, 1252, 1280, 1565, 1612, 1664, 1984, 2015, 2080, 2480, 2504, 3130, 3224, 3328, 3968, 4030, 4069, 4160, 4960, 5008, 6260, 6448, 7936, 8060, 8138, 8320, 9703, 9920, 10016, 12520, 12896, 16120, 16276, 16640, 19406, 19840, 20032, 20345, 25040, 25792, 32240, 32552, 38812, 39680, 40064, 40690, 48515, 50080, 51584, 64480, 65104, 77624, 80128, 81380, 97030, 100160, 103168, 126139, 128960, 130208, 155248, 162760, 194060, 200320, 252278, 257920, 260416, 310496, 325520, 388120, 400640, 504556, 515840, 520832, 620992, 630695, 651040, 776240, 1009112, 1041664, 1241984, 1261390, 1302080, 1552480, 2018224, 2483968, 2522780, 2604160, 3104960, 4036448, 5045560, 5208320, 6209920, 8072896, 10091120, 12419840, 16145792, 20182240, 32291584, 40364480, 80728960, 161457920]

約数ペア:

[(1, 161457920), (2, 80728960), (4, 40364480), (5, 32291584), (8, 20182240), (10, 16145792), (13, 12419840), (16, 10091120), (20, 8072896), (26, 6209920), (31, 5208320), (32, 5045560), (40, 4036448), (52, 3104960), (62, 2604160), (64, 2522780), (65, 2483968), (80, 2018224), (104, 1552480), (124, 1302080), (128, 1261390), (130, 1241984), (155, 1041664), (160, 1009112), (208, 776240), (248, 651040), (256, 630695), (260, 620992), (310, 520832), (313, 515840), (320, 504556), (403, 400640), (416, 388120), (496, 325520), (520, 310496), (620, 260416), (626, 257920), (640, 252278), (806, 200320), (832, 194060), (992, 162760), (1040, 155248), (1240, 130208), (1252, 128960), (1280, 126139), (1565, 103168), (1612, 100160), (1664, 97030), (1984, 81380), (2015, 80128), (2080, 77624), (2480, 65104), (2504, 64480), (3130, 51584), (3224, 50080), (3328, 48515), (3968, 40690), (4030, 40064), (4069, 39680), (4160, 38812), (4960, 32552), (5008, 32240), (6260, 25792), (6448, 25040), (7936, 20345), (8060, 20032), (8138, 19840), (8320, 19406), (9703, 16640), (9920, 16276), (10016, 16120), (12520, 12896)]