19742970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 55738368

約数和(自身を除く): 35995398

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 31, 39, 46, 62, 65, 69, 71, 78, 93, 115, 130, 138, 142, 155, 186, 195, 213, 230, 299, 310, 345, 355, 390, 403, 426, 465, 598, 690, 710, 713, 806, 897, 923, 930, 1065, 1209, 1426, 1495, 1633, 1794, 1846, 2015, 2130, 2139, 2201, 2418, 2769, 2990, 3266, 3565, 4030, 4278, 4402, 4485, 4615, 4899, 5538, 6045, 6603, 7130, 8165, 8970, 9230, 9269, 9798, 10695, 11005, 12090, 13206, 13845, 16330, 18538, 21229, 21390, 22010, 24495, 27690, 27807, 28613, 33015, 42458, 46345, 48990, 50623, 55614, 57226, 63687, 66030, 85839, 92690, 101246, 106145, 127374, 139035, 143065, 151869, 171678, 212290, 253115, 278070, 286130, 303738, 318435, 429195, 506230, 636870, 658099, 759345, 858390, 1316198, 1518690, 1974297, 3290495, 3948594, 6580990, 9871485, 19742970]

約数ペア:

[(1, 19742970), (2, 9871485), (3, 6580990), (5, 3948594), (6, 3290495), (10, 1974297), (13, 1518690), (15, 1316198), (23, 858390), (26, 759345), (30, 658099), (31, 636870), (39, 506230), (46, 429195), (62, 318435), (65, 303738), (69, 286130), (71, 278070), (78, 253115), (93, 212290), (115, 171678), (130, 151869), (138, 143065), (142, 139035), (155, 127374), (186, 106145), (195, 101246), (213, 92690), (230, 85839), (299, 66030), (310, 63687), (345, 57226), (355, 55614), (390, 50623), (403, 48990), (426, 46345), (465, 42458), (598, 33015), (690, 28613), (710, 27807), (713, 27690), (806, 24495), (897, 22010), (923, 21390), (930, 21229), (1065, 18538), (1209, 16330), (1426, 13845), (1495, 13206), (1633, 12090), (1794, 11005), (1846, 10695), (2015, 9798), (2130, 9269), (2139, 9230), (2201, 8970), (2418, 8165), (2769, 7130), (2990, 6603), (3266, 6045), (3565, 5538), (4030, 4899), (4278, 4615), (4402, 4485)]