19363840

素因数分解:

$2^{11}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 48746880

約数和(自身を除く): 29383040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 128, 155, 160, 244, 248, 256, 305, 310, 320, 488, 496, 512, 610, 620, 640, 976, 992, 1024, 1220, 1240, 1280, 1891, 1952, 1984, 2048, 2440, 2480, 2560, 3782, 3904, 3968, 4880, 4960, 5120, 7564, 7808, 7936, 9455, 9760, 9920, 10240, 15128, 15616, 15872, 18910, 19520, 19840, 30256, 31232, 31744, 37820, 39040, 39680, 60512, 62464, 63488, 75640, 78080, 79360, 121024, 124928, 151280, 156160, 158720, 242048, 302560, 312320, 317440, 484096, 605120, 624640, 968192, 1210240, 1936384, 2420480, 3872768, 4840960, 9681920, 19363840]

約数ペア:

[(1, 19363840), (2, 9681920), (4, 4840960), (5, 3872768), (8, 2420480), (10, 1936384), (16, 1210240), (20, 968192), (31, 624640), (32, 605120), (40, 484096), (61, 317440), (62, 312320), (64, 302560), (80, 242048), (122, 158720), (124, 156160), (128, 151280), (155, 124928), (160, 121024), (244, 79360), (248, 78080), (256, 75640), (305, 63488), (310, 62464), (320, 60512), (488, 39680), (496, 39040), (512, 37820), (610, 31744), (620, 31232), (640, 30256), (976, 19840), (992, 19520), (1024, 18910), (1220, 15872), (1240, 15616), (1280, 15128), (1891, 10240), (1952, 9920), (1984, 9760), (2048, 9455), (2440, 7936), (2480, 7808), (2560, 7564), (3782, 5120), (3904, 4960), (3968, 4880)]